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docs: remove TypeScript to JavaScript guide & sample

This commit is contained in:
Ward Bell 2017-08-14 20:58:56 -07:00 committed by Hans
parent 0a73e8d062
commit 697c6ed0fe
92 changed files with 4 additions and 2977 deletions
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4
aio/content/examples/.gitignore vendored
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@ -55,10 +55,6 @@ dist/
!testing/src/browser-test-shim.js !testing/src/browser-test-shim.js
!testing/karma*.js !testing/karma*.js
# TS to JS
!ts-to-js/js*/**/*.js
ts-to-js/js*/**/system*.js
# webpack # webpack
!webpack/**/config/*.js !webpack/**/config/*.js
!webpack/**/*webpack*.js !webpack/**/*webpack*.js

77
aio/content/examples/ts-to-js/e2e-spec.ts
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@ -1,77 +0,0 @@
'use strict'; // necessary for es6 output in node
import { browser, element, by } from 'protractor';
describe('TypeScript to Javascript tests', function () {
beforeAll(function () {
browser.get('');
});
it('should display the basic component example', function () {
testTag('hero-view', 'Hero Detail: Windstorm');
});
it('should display the component example with lifecycle methods', function () {
testTag('hero-lifecycle', 'Hero: Windstorm');
});
it('should display component with DI example', function () {
testTag('hero-di', 'Hero: Windstorm');
});
it('should display component with DI using @Inject example', function () {
testTag('hero-di-inject', 'Hero: Windstorm');
});
it('should support optional, attribute, and query injections', function () {
let app = element(by.css('hero-di-inject-additional'));
let h1 = app.element(by.css('h1'));
let okMsg = app.element(by.css('p'));
expect(h1.getText()).toBe('Tour of Heroes');
app.element(by.buttonText('OK')).click();
expect(okMsg.getText()).toBe('OK!');
});
it('should support component with inputs and outputs', function () {
let app = element(by.css('hero-io'));
let confirmComponent = app.element(by.css('app-confirm'));
confirmComponent.element(by.buttonText('OK')).click();
expect(app.element(by.cssContainingText('span', 'OK clicked')).isPresent()).toBe(true);
confirmComponent.element(by.buttonText('Cancel')).click();
expect(app.element(by.cssContainingText('span', 'Cancel clicked')).isPresent()).toBe(true);
});
it('should support host bindings and host listeners', function() {
let app = element(by.css('hero-host'));
let h1 = app.element(by.css('h1'));
expect(app.getAttribute('class')).toBe('heading');
expect(app.getAttribute('title')).toContain('Tooltip');
h1.click();
expect(h1.getAttribute('class')).toBe('active');
h1.click();
browser.actions().doubleClick(h1.getWebElement()).perform();
expect(h1.getAttribute('class')).toBe('active');
});
it('should support content and view queries', function() {
let app = element(by.css('hero-queries'));
let windstorm = app.element(by.css('view-child:first-child'));
app.element(by.css('button')).click();
expect(windstorm.element(by.css('h2')).getAttribute('class')).toBe('active');
expect(windstorm.element(by.css('content-child')).getText()).toBe('Active');
});
function testTag(selector: string, expectedText: string) {
let component = element(by.css(selector));
expect(component.getText()).toBe(expectedText);
}
});

3
aio/content/examples/ts-to-js/js-es6-decorators/example-config.json
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@ -1,3 +0,0 @@
{
"build": "build:babel"
}

9
aio/content/examples/ts-to-js/js-es6-decorators/plnkr.json
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@ -1,9 +0,0 @@
{
"description": "TypeScript to JavaScript",
"basePath": "src/",
"files":[
"!**/*.d.ts",
"!**/*.js"
],
"tags":["cookbook"]
}

6
aio/content/examples/ts-to-js/js-es6-decorators/src/.babelrc
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@ -1,6 +0,0 @@
{
"presets": [
"es2015",
"angular2"
]
}

14
aio/content/examples/ts-to-js/js-es6-decorators/src/app/app.component.es6
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@ -1,14 +0,0 @@
import { Component } from '@angular/core';
@Component({
selector: 'my-app',
templateUrl: './app.component.html',
styles: [
// See hero-di-inject-additional.component
'hero-host, hero-host-meta { border: 1px dashed black; display: block; padding: 4px;}',
'.heading {font-style: italic}'
]
})
export class AppComponent {
title = 'ES6 JavaScript with Decorators';
}

31
aio/content/examples/ts-to-js/js-es6-decorators/src/app/app.component.html
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@ -1,31 +0,0 @@
<a id="toc"></a>
<h1>{{title}}</h1>
<a href="#class-metadata">Classes and Class Metadata</a><br>
<a href="#io-metadata">Input and Output Decorators</a><br>
<a href="#dependency-injection">Dependency Injection</a><br>
<a href="#host-metadata">Host Metadata</a><br>
<a href="#view-child-metadata">View and Child Metadata</a><br>
<hr>
<h4 id="class-metadata">Classes and Class Metadata</h4>
<hero-view></hero-view>
<hero-lifecycle></hero-lifecycle>
<hr>
<h4 id="io-metadata">Input and Output Metadata</h4>
<hero-io></hero-io>
<hr>
<h4 id="dependency-injection">Dependency Injection</h4>
<hero-di></hero-di>
<hero-di-inject></hero-di-inject>
<hero-di-inject-additional></hero-di-inject-additional>
<hr>
<h4 id="host-metadata">Host Metadata</h4>
<hero-host></hero-host>
<hero-host-meta></hero-host-meta>
<hr>
<h4 id="view-child-metadata">View and Child Metadata</h4>
<hero-queries></hero-queries>

55
aio/content/examples/ts-to-js/js-es6-decorators/src/app/app.module.es6
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@ -1,55 +0,0 @@
import { NgModule, NO_ERRORS_SCHEMA } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { ConfirmComponent } from './confirm.component';
// #docregion appimport
import { HeroComponent } from './hero.component';
// #enddocregion appimport
import { HeroComponent as HeroDIComponent } from './hero-di.component';
import { HeroComponent as HeroDIInjectComponent } from './hero-di-inject.component';
import { HeroComponent as HeroDIInjectAdditionalComponent } from './hero-di-inject-additional.component';
import { HeroHostComponent } from './hero-host.component';
import { HeroHostMetaComponent } from './hero-host-meta.component';
import { HeroIOComponent } from './hero-io.component';
import { HeroComponent as HeroLifecycleComponent } from './hero-lifecycle.component';
import { HeroQueriesComponent, ViewChildComponent, ContentChildComponent } from './hero-queries.component';
import { HeroTitleComponent } from './hero-title.component';
import { DataService } from './data.service';
@NgModule({
imports: [
BrowserModule
],
declarations: [
AppComponent,
ConfirmComponent,
HeroComponent,
HeroDIComponent,
HeroDIInjectComponent,
HeroDIInjectAdditionalComponent,
HeroHostComponent, HeroHostMetaComponent,
HeroIOComponent,
HeroLifecycleComponent,
HeroQueriesComponent, ViewChildComponent, ContentChildComponent,
HeroTitleComponent
],
providers: [
DataService,
{ provide: 'heroName', useValue: 'Windstorm' }
],
bootstrap: [ AppComponent ],
// schemas: [ NO_ERRORS_SCHEMA ] // helpful for debugging
})
export class AppModule { }
/* tslint:disable no-unused-variable */
// #docregion ng2import
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import {
LocationStrategy,
HashLocationStrategy
} from '@angular/common';
// #enddocregion ng2import

21
aio/content/examples/ts-to-js/js-es6-decorators/src/app/confirm.component.es6
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@ -1,21 +0,0 @@
import { Component, EventEmitter, Input, Output } from '@angular/core';
// #docregion
@Component({
selector: 'app-confirm',
templateUrl: './confirm.component.html'
})
export class ConfirmComponent {
@Input() okMsg = '';
@Input('cancelMsg') notOkMsg = '';
@Output() ok = new EventEmitter();
@Output('cancel') notOk = new EventEmitter();
onOkClick() {
this.ok.emit(true);
}
onNotOkClick() {
this.notOk.emit(true);
}
}
// #enddocregion

6
aio/content/examples/ts-to-js/js-es6-decorators/src/app/confirm.component.html
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@ -1,6 +0,0 @@
<button (click)="onOkClick()">
{{okMsg}}
</button>
<button (click)="onNotOkClick()">
{{notOkMsg}}
</button>

10
aio/content/examples/ts-to-js/js-es6-decorators/src/app/data.service.es6
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@ -1,10 +0,0 @@
import { Injectable } from '@angular/core';
@Injectable()
export class DataService {
constructor() { }
getHeroName() {
return 'Windstorm';
}
}

7
aio/content/examples/ts-to-js/js-es6-decorators/src/app/hero-di-inject-additional.component.es6
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@ -1,7 +0,0 @@
import { Component } from '@angular/core';
@Component({
selector: 'hero-di-inject-additional',
template: `<hero-title title="Tour of Heroes"></hero-title>`
})
export class HeroComponent { }

13
aio/content/examples/ts-to-js/js-es6-decorators/src/app/hero-di-inject.component.es6
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@ -1,13 +0,0 @@
import { Component, Inject } from '@angular/core';
// #docregion
@Component({
selector: 'hero-di-inject',
template: `<h1>Hero: {{name}}</h1>`
})
export class HeroComponent {
constructor(@Inject('heroName') name) {
this.name = name;
}
}
// #enddocregion

15
aio/content/examples/ts-to-js/js-es6-decorators/src/app/hero-di.component.es6
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@ -1,15 +0,0 @@
// #docregion
import { Component } from '@angular/core';
import { DataService } from './data.service';
@Component({
selector: 'hero-di',
template: `<h1>Hero: {{name}}</h1>`
})
export class HeroComponent {
name = '';
constructor(dataService: DataService) {
this.name = dataService.getHeroName();
}
}
// #enddocregion

44
aio/content/examples/ts-to-js/js-es6-decorators/src/app/hero-host-meta.component.es6
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@ -1,44 +0,0 @@
import { Component } from '@angular/core';
// #docregion
@Component({
selector: 'hero-host-meta',
template: `
<h1 [class.active]="active">Hero Host in Metadata</h1>
<div>Heading clicks: {{clicks}}</div>
`,
host: {
// HostBindings to the <hero-host-meta> element
'[title]': 'title',
'[class.heading]': 'headingClass',
// HostListeners on the entire <hero-host-meta> element
'(click)': 'clicked()',
'(mouseenter)': 'enter($event)',
'(mouseleave)': 'leave($event)'
},
// Styles within (but excluding) the <hero-host-meta> element
styles: ['.active {background-color: coral;}']
})
export class HeroHostMetaComponent {
title = 'Hero Host in Metadata Tooltip';
headingClass = true;
active = false;
clicks = 0;
clicked() {
this.clicks += 1;
}
enter(event: Event) {
this.active = true;
this.headingClass = false;
}
leave(event: Event) {
this.active = false;
this.headingClass = true;
}
}
// #enddocregion

39
aio/content/examples/ts-to-js/js-es6-decorators/src/app/hero-host.component.es6
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@ -1,39 +0,0 @@
import { Component, HostBinding, HostListener } from '@angular/core';
// #docregion
@Component({
selector: 'hero-host',
template: `
<h1 [class.active]="active">Hero Host in Decorators</h1>
<div>Heading clicks: {{clicks}}</div>
`,
// Styles within (but excluding) the <hero-host> element
styles: ['.active {background-color: yellow;}']
})
export class HeroHostComponent {
// HostBindings to the <hero-host> element
@HostBinding() title = 'Hero Host in Decorators Tooltip';
@HostBinding('class.heading') headingClass = true;
active = false;
clicks = 0;
// HostListeners on the entire <hero-host> element
@HostListener('click')
clicked() {
this.clicks += 1;
}
@HostListener('mouseenter', ['$event'])
enter(event: Event) {
this.active = true;
this.headingClass = false;
}
@HostListener('mouseleave', ['$event'])
leave(event: Event) {
this.active = false;
this.headingClass = true;
}
}
// #enddocregion

26
aio/content/examples/ts-to-js/js-es6-decorators/src/app/hero-io.component.es6
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@ -1,26 +0,0 @@
import { Component } from '@angular/core';
@Component({
selector: 'hero-io',
template: `
<app-confirm [okMsg]="'OK'"
[cancelMsg]="'Cancel'"
(ok)="onOk()"
(cancel)="onCancel()">
</app-confirm>
<span *ngIf="okClicked">OK clicked</span>
<span *ngIf="cancelClicked">Cancel clicked</span>
`
})
export class HeroIOComponent {
okClicked = false;
cancelClicked = false;
onOk() {
this.okClicked = true;
}
onCancel() {
this.cancelClicked = true;
}
}

14
aio/content/examples/ts-to-js/js-es6-decorators/src/app/hero-lifecycle.component.es6
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@ -1,14 +0,0 @@
// #docregion
import { Component } from '@angular/core';
@Component({
selector: 'hero-lifecycle',
template: `<h1>Hero: {{name}}</h1>`
})
export class HeroComponent {
name = '';
ngOnInit() {
// todo: fetch from server async
setTimeout(() => this.name = 'Windstorm', 0);
}
}

81
aio/content/examples/ts-to-js/js-es6-decorators/src/app/hero-queries.component.es6
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@ -1,81 +0,0 @@
import {
Component,
ContentChild,
Input,
QueryList,
ViewChildren
} from '@angular/core';
@Component({
selector: 'content-child',
template: `
<span class="content-child" *ngIf="active">
Active
</span>`
})
export class ContentChildComponent {
active = false;
activate() {
this.active = true;
}
}
////////////////////
// #docregion content
@Component({
selector: 'view-child',
template: `
<h2 [class.active]=active>
{{hero.name}}
<ng-content></ng-content>
</h2>`,
styles: ['.active {font-weight: bold; background-color: skyblue;}']
})
export class ViewChildComponent {
@Input() hero;
active = false;
@ContentChild(ContentChildComponent) content;
activate() {
this.active = !this.active;
this.content.activate();
}
}
// #enddocregion content
////////////////////
// #docregion view
@Component({
selector: 'hero-queries',
template: `
<view-child *ngFor="let hero of heroData" [hero]="hero">
<content-child></content-child>
</view-child>
<button (click)="activate()">{{buttonLabel}} All</button>
`
})
export class HeroQueriesComponent {
active = false;
heroData = [
{id: 1, name: 'Windstorm'},
{id: 2, name: 'LaughingGas'}
];
@ViewChildren(ViewChildComponent) views;
activate() {
this.active = !this.active;
this.views.forEach(
view => view.activate()
);
}
get buttonLabel() {
return this.active ? 'Deactivate' : 'Activate';
}
}
// #enddocregion view

25
aio/content/examples/ts-to-js/js-es6-decorators/src/app/hero-title.component.es6
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@ -1,25 +0,0 @@
import { Attribute, Component, Inject, Optional } from '@angular/core';
// #docregion
// #docregion templateUrl
@Component({
selector: 'hero-title',
templateUrl: './hero-title.component.html'
})
// #enddocregion templateUrl
export class HeroTitleComponent {
msg = '';
constructor(
@Inject('titlePrefix') @Optional() titlePrefix,
@Attribute('title') title
) {
this.titlePrefix = titlePrefix;
this.title = title;
}
ok() {
this.msg = 'OK!';
}
}
// #enddocregion

4
aio/content/examples/ts-to-js/js-es6-decorators/src/app/hero-title.component.html
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@ -1,4 +0,0 @@
<!-- #docregion -->
<h1>{{titlePrefix}} {{title}}</h1>
<button (click)="ok()">OK</button>
<p>{{ msg }}</p>

15
aio/content/examples/ts-to-js/js-es6-decorators/src/app/hero.component.es6
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@ -1,15 +0,0 @@
// #docregion
// #docregion metadata
import { Component } from '@angular/core';
@Component({
selector: 'hero-view',
template: '<h1>{{title}}: {{getName()}}</h1>'
})
// #docregion appexport, class
export class HeroComponent {
title = 'Hero Detail';
getName() {return 'Windstorm'; }
}
// #enddocregion appexport, class
// #enddocregion metadata

26
aio/content/examples/ts-to-js/js-es6-decorators/src/index.html
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@ -1,26 +0,0 @@
<!DOCTYPE html>
<html>
<head>
<base href="/">
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="styles.css">
<title>TypeScript to JavaScript</title>
<!-- Polyfill(s) for older browsers -->
<script src="node_modules/core-js/client/shim.min.js"></script>
<script src="node_modules/zone.js/dist/zone.js"></script>
<script src="node_modules/systemjs/dist/system.src.js"></script>
<script src="systemjs.config.js"></script>
<script>
System.import('main.js').catch(function(err){ console.error(err); });
</script>
</head>
<body>
<my-app>Loading...</my-app>
</body>
</html>

4
aio/content/examples/ts-to-js/js-es6-decorators/src/main.es6
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@ -1,4 +0,0 @@
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { AppModule } from './app/app.module';
platformBrowserDynamic().bootstrapModule(AppModule);

3
aio/content/examples/ts-to-js/js-es6/example-config.json
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@ -1,3 +0,0 @@
{
"build": "build:babel"
}

9
aio/content/examples/ts-to-js/js-es6/plnkr.json
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@ -1,9 +0,0 @@
{
"description": "TypeScript to JavaScript",
"basePath": "src/",
"files":[
"!**/*.d.ts",
"!**/*.js"
],
"tags":["cookbook"]
}

5
aio/content/examples/ts-to-js/js-es6/src/.babelrc
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@ -1,5 +0,0 @@
{
"presets": [
"es2015"
]
}

19
aio/content/examples/ts-to-js/js-es6/src/app/app.component.es6
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@ -1,19 +0,0 @@
import { Component } from '@angular/core';
export class AppComponent {
constructor() {
this.title = 'Plain ES6 JavaScript';
}
}
AppComponent.annotations = [
new Component({
selector: 'my-app',
templateUrl: './app.component.html',
styles: [
// See hero-di-inject-additional.component
'hero-host { border: 1px dashed black; display: block; padding: 4px;}',
'.heading {font-style: italic}'
]
})
];

30
aio/content/examples/ts-to-js/js-es6/src/app/app.component.html
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@ -1,30 +0,0 @@
<a id="toc"></a>
<h1>{{title}}</h1>
<a href="#class-metadata">Classes and Class Metadata</a><br>
<a href="#io-metadata">Input and Output Metadata</a><br>
<a href="#dependency-injection">Dependency Injection</a><br>
<a href="#host-metadata">Host Metadata</a><br>
<a href="#view-child-metadata">View and Child Metadata</a><br>
<hr>
<h4 id="class-metadata">Classes and Class Metadata</h4>
<hero-view></hero-view>
<hero-lifecycle></hero-lifecycle>
<hr>
<h4 id="io-metadata">Input and Output Metadata</h4>
<hero-io></hero-io>
<hr>
<h4 id="dependency-injection">Dependency Injection</h4>
<hero-di></hero-di>
<hero-di-inject></hero-di-inject>
<hero-di-inject-additional></hero-di-inject-additional>
<hr>
<h4 id="host-metadata">Host Metadata</h4>
<hero-host></hero-host>
<hr>
<h4 id="view-child-metadata">View and Child Metadata</h4>
<hero-queries></hero-queries>

56
aio/content/examples/ts-to-js/js-es6/src/app/app.module.es6
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@ -1,56 +0,0 @@
import { NgModule, NO_ERRORS_SCHEMA } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { ConfirmComponent } from './confirm.component';
// #docregion appimport
import { HeroComponent } from './hero.component';
// #enddocregion appimport
import { HeroComponent as HeroDIComponent } from './hero-di.component';
import { HeroComponent as HeroDIInjectComponent } from './hero-di-inject.component';
import { HeroComponent as HeroDIInjectAdditionalComponent } from './hero-di-inject-additional.component';
import { HeroHostComponent } from './hero-host.component';
import { HeroIOComponent } from './hero-io.component';
import { HeroComponent as HeroLifecycleComponent } from './hero-lifecycle.component';
import { HeroQueriesComponent, ViewChildComponent, ContentChildComponent } from './hero-queries.component';
import { HeroTitleComponent } from './hero-title.component';
import { DataService } from './data.service';
export class AppModule { }
AppModule.annotations = [
new NgModule({
imports: [ BrowserModule],
declarations: [
AppComponent,
ConfirmComponent,
HeroComponent,
HeroDIComponent,
HeroDIInjectComponent,
HeroDIInjectAdditionalComponent,
HeroHostComponent,
HeroIOComponent,
HeroLifecycleComponent,
HeroQueriesComponent, ViewChildComponent, ContentChildComponent,
HeroTitleComponent
],
providers: [
DataService,
{ provide: 'heroName', useValue: 'Windstorm' }
],
bootstrap: [ AppComponent ],
// schemas: [ NO_ERRORS_SCHEMA ] // helpful for debugging
})
]
/* tslint:disable no-unused-variable */
// #docregion ng2import
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import {
LocationStrategy,
HashLocationStrategy
} from '@angular/common';
// #enddocregion ng2import

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aio/content/examples/ts-to-js/js-es6/src/app/confirm.component.es6
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@ -1,31 +0,0 @@
import { Component, EventEmitter } from '@angular/core';
// #docregion
export class ConfirmComponent {
constructor(){
this.ok = new EventEmitter();
this.notOk = new EventEmitter();
}
onOkClick() {
this.ok.emit(true);
}
onNotOkClick() {
this.notOk.emit(true);
}
}
ConfirmComponent.annotations = [
new Component({
selector: 'app-confirm',
templateUrl: './confirm.component.html',
inputs: [
'okMsg',
'notOkMsg: cancelMsg'
],
outputs: [
'ok',
'notOk: cancel'
]
})
];
// #enddocregion

6
aio/content/examples/ts-to-js/js-es6/src/app/confirm.component.html
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@ -1,6 +0,0 @@
<button (click)="onOkClick()">
{{okMsg}}
</button>
<button (click)="onNotOkClick()">
{{notOkMsg}}
</button>

13
aio/content/examples/ts-to-js/js-es6/src/app/data.service.es6
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@ -1,13 +0,0 @@
import { Injectable } from '@angular/core';
export class DataService {
constructor() {
}
getHeroName() {
return 'Windstorm';
}
}
DataService.annotations = [
new Injectable()
];

10
aio/content/examples/ts-to-js/js-es6/src/app/hero-di-inject-additional.component.es6
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@ -1,10 +0,0 @@
import { Component } from '@angular/core';
export class HeroComponent { }
HeroComponent.annotations = [
new Component({
selector: 'hero-di-inject-additional',
template: `<hero-title title="Tour of Heroes"></hero-title>`
})
];

20
aio/content/examples/ts-to-js/js-es6/src/app/hero-di-inject.component.es6
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@ -1,20 +0,0 @@
import { Component, Inject } from '@angular/core';
// #docregion
export class HeroComponent {
constructor(name) {
this.name = name;
}
}
HeroComponent.annotations = [
new Component({
selector: 'hero-di-inject',
template: `<h1>Hero: {{name}}</h1>`
})
];
HeroComponent.parameters = [
[new Inject('heroName')]
];
// #enddocregion

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@ -1,21 +0,0 @@
// #docregion
import { Component } from '@angular/core';
import { DataService } from './data.service';
export class HeroComponent {
constructor(dataService) {
this.name = dataService.getHeroName();
}
}
HeroComponent.annotations = [
new Component({
selector: 'hero-di',
template: `<h1>Hero: {{name}}</h1>`
})
];
HeroComponent.parameters = [
[DataService]
];
// #enddocregion

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@ -1,50 +0,0 @@
import { Component } from '@angular/core';
// #docregion
export class HeroHostComponent {
constructor() {
this.active = false;
this.clicks = 0;
this.headingClass = true;
this.title = 'Hero Host Tooltip';
}
clicked() {
this.clicks += 1;
}
enter(event) {
this.active = true;
this.headingClass = false;
}
leave(event) {
this.active = false;
this.headingClass = true;
}
}
// #docregion metadata
HeroHostComponent.annotations = [
new Component({
selector: 'hero-host',
template: `
<h1 [class.active]="active">Hero Host</h1>
<div>Heading clicks: {{clicks}}</div>
`,
host: {
// HostBindings to the <hero-host> element
'[title]': 'title',
'[class.heading]': 'headingClass',
'(click)': 'clicked()',
// HostListeners on the entire <hero-host> element
'(mouseenter)': 'enter($event)',
'(mouseleave)': 'leave($event)'
},
// Styles within (but excluding) the <hero-host> element
styles: ['.active {background-color: yellow;}']
})
];
// #enddocregion metadata
// #enddocregion

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import { Component } from '@angular/core';
export class HeroIOComponent {
constructor() {
this.okClicked = false;
this.cancelClicked = false;
}
onOk() {
this.okClicked = true;
}
onCancel() {
this.cancelClicked = true;
}
}
HeroIOComponent.annotations = [
new Component({
selector: 'hero-io',
template: `
<app-confirm [okMsg]="'OK'"
[cancelMsg]="'Cancel'"
(ok)="onOk()"
(cancel)="onCancel()">
</app-confirm>
<span *ngIf="okClicked">OK clicked</span>
<span *ngIf="cancelClicked">Cancel clicked</span>
`
})
];

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@ -1,15 +0,0 @@
// #docregion
import { Component } from '@angular/core';
export class HeroComponent {
ngOnInit() {
// todo: fetch from server async
setTimeout(() => this.name = 'Windstorm', 0);
}
}
HeroComponent.annotations = [
new Component({
selector: 'hero-lifecycle',
template: `<h1>Hero: {{name}}</h1>`
})
];

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import {
Component,
ContentChild,
Input,
QueryList,
ViewChildren
} from '@angular/core';
export class ContentChildComponent {
constructor() {
this.active = false;
}
activate() {
this.active = !this.active;
}
}
ContentChildComponent.annotations = [
new Component({
selector: 'content-child',
template: `
<span class="content-child" *ngIf="active">
Active
</span>`
})
];
////////////////////
// #docregion content
export class ViewChildComponent {
constructor() {
this.active = false;
}
activate() {
this.active = !this.active;
this.content.activate();
}
}
ViewChildComponent.annotations = [
new Component({
selector: 'view-child',
template: `<h2 [class.active]=active>
{{hero.name}}
<ng-content></ng-content>
</h2>`,
styles: ['.active {font-weight: bold; background-color: skyblue;}'],
inputs: ['hero'],
queries: {
content: new ContentChild(ContentChildComponent)
}
})
];
// #enddocregion content
////////////////////
// #docregion view
export class HeroQueriesComponent {
constructor(){
this.active = false;
this.heroData = [
{id: 1, name: 'Windstorm'},
{id: 2, name: 'LaughingGas'}
];
}
activate() {
this.active = !this.active;
this.views.forEach(
view => view.activate()
);
}
get buttonLabel() {
return this.active ? 'Deactivate' : 'Activate';
}
}
HeroQueriesComponent.annotations = [
new Component({
selector: 'hero-queries',
template: `
<view-child *ngFor="let hero of heroData" [hero]="hero">
<content-child></content-child>
</view-child>
<button (click)="activate()">{{buttonLabel}} All</button>
`,
queries: {
views: new ViewChildren(ViewChildComponent)
}
})
];
// #enddocregion view

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import { Attribute, Component, Inject, Optional } from '@angular/core';
// #docregion
export class HeroTitleComponent {
constructor(titlePrefix, title) {
this.titlePrefix = titlePrefix;
this.title = title;
this.msg = '';
}
ok() {
this.msg = 'OK!';
}
}
// #docregion templateUrl
HeroTitleComponent.annotations = [
new Component({
selector: 'hero-title',
templateUrl: './hero-title.component.html'
})
];
// #enddocregion templateUrl
HeroTitleComponent.parameters = [
[new Optional(), new Inject('titlePrefix')],
[new Attribute('title')]
];

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@ -1,4 +0,0 @@
<!-- #docregion -->
<h1>{{titlePrefix}} {{title}}</h1>
<button (click)="ok()">OK</button>
<p>{{ msg }}</p>

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@ -1,21 +0,0 @@
// #docplaster
// #docregion
// #docregion metadata
import { Component } from '@angular/core';
// #docregion appexport, class
export class HeroComponent {
constructor() {
this.title = 'Hero Detail';
}
getName() {return 'Windstorm'; }
}
// #enddocregion appexport, class
HeroComponent.annotations = [
new Component({
selector: 'hero-view',
template: '<h1>{{title}}: {{getName()}}</h1>'
})
];
// #enddocregion metadata

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@ -1,26 +0,0 @@
<!DOCTYPE html>
<html>
<head>
<base href="/">
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="styles.css">
<title>TypeScript to JavaScript</title>
<!-- Polyfill(s) for older browsers -->
<script src="node_modules/core-js/client/shim.min.js"></script>
<script src="node_modules/zone.js/dist/zone.js"></script>
<script src="node_modules/systemjs/dist/system.src.js"></script>
<script src="systemjs.config.js"></script>
<script>
System.import('main.js').catch(function(err){ console.error(err); });
</script>
</head>
<body>
<my-app>Loading...</my-app>
</body>
</html>

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@ -1,4 +0,0 @@
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { AppModule } from './app/app.module';
platformBrowserDynamic().bootstrapModule(AppModule);

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@ -1,3 +0,0 @@
{
"build": "build:babel"
}

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@ -1,8 +0,0 @@
{
"description": "TypeScript to JavaScript",
"basePath": "src/",
"files":[
"!**/karma*.*"
],
"tags":["cookbook"]
}

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@ -1,47 +0,0 @@
<a id="toc"></a>
<h1>{{title}}</h1>
<a href="#class-metadata">Classes and Class Metadata</a><br>
<a href="#interfaces">Interfaces</a><br>
<a href="#io-metadata">Input and Output Metadata</a><br>
<a href="#dependency-injection">Dependency Injection</a><br>
<a href="#host-metadata">Host Metadata</a><br>
<a href="#view-child-metadata">View and Child Metadata</a><br>
<hr>
<h4 id="class-metadata">Classes and Class Metadata</h4>
<hero-view></hero-view>
<h4 id="class-metadata-dsl">Classes and Class Metadata (DSL)</h4>
<hero-view-dsl></hero-view-dsl>
<hr>
<h4 id="interfaces">Interfaces</h4>
<hero-lifecycle></hero-lifecycle>
<h4 id="interfaces-dsl">Interfaces (DSL)</h4>
<hero-lifecycle-dsl></hero-lifecycle-dsl>
<hr>
<h4 id="io-metadata">Input and Output Metadata</h4>
<hero-io></hero-io>
<h4 id="io-metadata-dsl">Input and Output Metadata (DSL)</h4>
<hero-io-dsl></hero-io-dsl>
<hr>
<h4 id="dependency-injection">Dependency Injection</h4>
<hero-di></hero-di>
<hero-di-inject></hero-di-inject>
<hero-di-inject-additional></hero-di-inject-additional>
<h4 id="dependency-injection-dsl">Dependency Injection (DSL)</h4>
<hero-di-dsl></hero-di-dsl>
<hero-di-inject-dsl></hero-di-inject-dsl>
<hero-di-inject-additional-dsl></hero-di-inject-additional-dsl>
<hr>
<h4 id="host-metadata">Host Metadata</h4>
<hero-host></hero-host>
<h4 id="host-metadata-dsl">Host Metadata (DSL)</h4>
<hero-host-dsl></hero-host-dsl>
<hr>
<h4 id="view-child-metadata">View and Child Metadata (DSL)</h4>
<hero-queries></hero-queries>

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(function(app) {
app.AppComponent = AppComponent;
function AppComponent() {
this.title = 'ES5 JavaScript';
}
AppComponent.annotations = [
new ng.core.Component({
selector: 'my-app',
templateUrl: 'app/app.component.html',
styles: [
// See hero-di-inject-additional.component
'hero-host, hero-host-dsl { border: 1px dashed black; display: block; padding: 4px;}',
'.heading {font-style: italic}'
]
})
];
})(window.app = window.app || {});

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(function(app) {
app.AppModule = AppModule;
function AppModule() { }
AppModule.annotations = [
new ng.core.NgModule({
imports: [ ng.platformBrowser.BrowserModule ],
declarations: [
app.AppComponent,
app.ConfirmComponent, app.ConfirmDslComponent,
app.HeroComponent, app.HeroDslComponent,
app.HeroDIComponent, app.HeroDIDslComponent,
app.HeroDIInjectComponent, app.HeroDIInjectDslComponent,
app.HeroDIInjectAdditionalComponent, app.HeroDIInjectAdditionalDslComponent,
app.HeroHostComponent, app.HeroHostDslComponent,
app.HeroIOComponent, app.HeroIODslComponent,
app.HeroLifecycleComponent, app.HeroLifecycleDslComponent,
app.heroQueries.HeroQueriesComponent, app.heroQueries.ViewChildComponent, app.heroQueries.ContentChildComponent,
app.HeroTitleComponent, app.HeroTitleDslComponent
],
providers: [
app.DataService,
{ provide: 'heroName', useValue: 'Windstorm' }
],
bootstrap: [ app.AppComponent ],
// schemas: [ ng.core.NO_ERRORS_SCHEMA ] // helpful for debugging!
})
]
})(window.app = window.app || {});
///// For documentation only /////
(function () {
// #docregion appimport
var HeroComponent = app.HeroComponent;
// #enddocregion appimport
// #docregion ng2import
var platformBrowserDynamic = ng.platformBrowserDynamic.platformBrowserDynamic;
var LocationStrategy = ng.common.LocationStrategy;
var HashLocationStrategy = ng.common.HashLocationStrategy;
// #enddocregion ng2import
})

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@ -1,6 +0,0 @@
<button (click)="onOkClick()">
{{okMsg}}
</button>
<button (click)="onNotOkClick()">
{{notOkMsg}}
</button>

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@ -1,75 +0,0 @@
(function(app) {
// #docregion
app.ConfirmComponent = ConfirmComponent;
ConfirmComponent.annotations = [
new ng.core.Component({
selector: 'app-confirm',
templateUrl: 'app/confirm.component.html',
inputs: [
'okMsg',
'notOkMsg: cancelMsg'
],
outputs: [
'ok',
'notOk: cancel'
]
})
];
function ConfirmComponent() {
this.ok = new ng.core.EventEmitter();
this.notOk = new ng.core.EventEmitter();
}
ConfirmComponent.prototype.onOkClick = function() {
this.ok.emit(true);
}
ConfirmComponent.prototype.onNotOkClick = function() {
this.notOk.emit(true);
}
// #enddocregion
})(window.app = window.app || {});
/////// DSL version ////////
(function(app) {
var old = app.ConfirmComponent;
// #docregion dsl
app.ConfirmComponent = ng.core.Component({
selector: 'app-confirm-dsl',
templateUrl: 'app/confirm.component.html',
inputs: [
'okMsg',
'notOkMsg: cancelMsg'
],
outputs: [
'ok',
'notOk: cancel'
]
})
.Class({
constructor: function ConfirmComponent() {
this.ok = new ng.core.EventEmitter();
this.notOk = new ng.core.EventEmitter();
},
onOkClick: function() {
this.ok.emit(true);
},
onNotOkClick: function() {
this.notOk.emit(true);
}
});
// #enddocregion dsl
app.ConfirmDslComponent = app.ConfirmComponent;
app.ConfirmComponent = old;
})(window.app = window.app || {});

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@ -1,10 +0,0 @@
(function(app) {
app.DataService = DataService;
function DataService() { }
DataService.prototype.getHeroName = function() {
return 'Windstorm';
};
})(window.app = window.app || {});

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@ -1,36 +0,0 @@
(function(app) {
var old = app.HeroComponent;
app.HeroComponent = HeroComponent;
HeroComponent.annotations = [
new ng.core.Component({
selector: 'hero-di-inject-additional',
template: '<hero-title title="Tour of Heroes"></hero-title>'
})
];
function HeroComponent() {}
app.HeroDIInjectAdditionalComponent = app.HeroComponent;
app.HeroComponent = old;
})(window.app = window.app || {});
////// DSL Version /////////
(function(app) {
var old = app.HeroComponent;
app.HeroComponent = ng.core.Component({
selector: 'hero-di-inject-additional-dsl',
template: '<hero-title-dsl title="Tour of Heroes"></hero-title-dsl>'
}).Class({
constructor: function HeroComponent() { }
});
app.HeroDIInjectAdditionalDslComponent = app.HeroComponent;
app.HeroComponent = old;
})(window.app = window.app || {});

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@ -1,51 +0,0 @@
(function(app) {
var old = app.HeroComponent;
// #docregion
app.HeroComponent = HeroComponent;
HeroComponent.annotations = [
new ng.core.Component({
selector: 'hero-di-inject',
template: '<h1>Hero: {{name}}</h1>'
})
];
HeroComponent.parameters = [ 'heroName' ];
function HeroComponent(name) {
this.name = name;
}
// #enddocregion
app.HeroDIInjectComponent = app.HeroComponent;
app.HeroComponent = old;
})(window.app = window.app || {});
/////// DSL version ////////
(function(app) {
var old = app.HeroComponent;
// #docregion dsl
app.HeroComponent = ng.core.Component({
selector: 'hero-di-inject-dsl',
template: '<h1>Hero: {{name}}</h1>'
})
.Class({
constructor: [
new ng.core.Inject('heroName'),
function HeroComponent(name) {
this.name = name;
}
]
});
// #enddocregion dsl
app.HeroDIInjectDslComponent = app.HeroComponent;
app.HeroComponent = old;
})(window.app = window.app || {});

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@ -1,51 +0,0 @@
(function(app) {
var old = app.HeroComponent;
// #docregion
app.HeroComponent = HeroComponent;
HeroComponent.annotations = [
new ng.core.Component({
selector: 'hero-di',
template: '<h1>Hero: {{name}}</h1>'
})
];
HeroComponent.parameters = [ app.DataService ];
function HeroComponent(dataService) {
this.name = dataService.getHeroName();
}
// #enddocregion
app.HeroDIComponent = app.HeroComponent;
app.HeroComponent = old;
})(window.app = window.app || {});
////// DSL Version /////
(function(app) {
var old = app.HeroComponent;
// #docregion dsl
app.HeroComponent = ng.core.Component({
selector: 'hero-di-dsl',
template: '<h1>Hero: {{name}}</h1>'
})
.Class({
constructor: [
app.DataService,
function HeroComponent(service) {
this.name = service.getHeroName();
}
]
});
// #enddocregion dsl
app.HeroDIDslComponent = app.HeroComponent;
app.HeroComponent = old;
})(window.app = window.app || {});

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@ -1,107 +0,0 @@
(function(app) {
var old = app.HeroComponent
// #docregion
app.HeroComponent = HeroComponent;
HeroComponent.annotations = [
new ng.core.Component({
selector: 'hero-host',
template:
'<h1 [class.active]="active">Hero Host</h1>' +
'<div>Heading clicks: {{clicks}}</div>',
host: {
// HostBindings to the <hero-host> element
'[title]': 'title',
'[class.heading]': 'headingClass',
'(click)': 'clicked()',
// HostListeners on the entire <hero-host> element
'(mouseenter)': 'enter($event)',
'(mouseleave)': 'leave($event)'
},
// Styles within (but excluding) the <hero-host> element
styles: ['.active {background-color: yellow;}']
})
];
function HeroComponent() {
this.clicks = 0;
this.headingClass = true;
this.title = 'Hero Host Tooltip content';
}
HeroComponent.prototype.clicked = function() {
this.clicks += 1;
}
HeroComponent.prototype.enter = function(event) {
this.active = true;
this.headingClass = false;
}
HeroComponent.prototype.leave = function(event) {
this.active = false;
this.headingClass = true;
}
// #enddocregion
app.HeroHostComponent = app.HeroComponent;
app.HeroComponent = old;
})(window.app = window.app || {});
//// DSL Version ////
(function(app) {
var old = app.HeroComponent;
// #docregion dsl
app.HeroComponent = ng.core.Component({
selector: 'hero-host-dsl',
template: `
<h1 [class.active]="active">Hero Host (DSL)</h1>
<div>Heading clicks: {{clicks}}</div>
`,
host: {
// HostBindings to the <hero-host-dsl> element
'[title]': 'title',
'[class.heading]': 'headingClass',
'(click)': 'clicked()',
// HostListeners on the entire <hero-host-dsl> element
'(mouseenter)': 'enter($event)',
'(mouseleave)': 'leave($event)'
},
// Styles within (but excluding) the <hero-host-dsl> element
styles: ['.active {background-color: coral;}']
})
.Class({
constructor: function HeroComponent() {
this.clicks = 0;
this.headingClass = true;
this.title = 'Hero Host Tooltip DSL content';
},
clicked() {
this.clicks += 1;
},
enter(event) {
this.active = true;
this.headingClass = false;
},
leave(event) {
this.active = false;
this.headingClass = true;
}
});
// #enddocregion dsl
app.HeroHostDslComponent = app.HeroComponent;
app.HeroComponent = old;
})(window.app = window.app || {});

7
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@ -1,7 +0,0 @@
<app-confirm-dsl [okMsg]="'OK'"
[cancelMsg]="'Cancel'"
(ok)="onOk()"
(cancel)="onCancel()">
</app-confirm-dsl>
<span *ngIf="okClicked">OK clicked</span>
<span *ngIf="cancelClicked">Cancel clicked</span>

7
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@ -1,7 +0,0 @@
<app-confirm [okMsg]="'OK'"
[cancelMsg]="'Cancel'"
(ok)="onOk()"
(cancel)="onCancel()">
</app-confirm>
<span *ngIf="okClicked">OK clicked</span>
<span *ngIf="cancelClicked">Cancel clicked</span>

52
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@ -1,52 +0,0 @@
(function(app) {
var old = app.HeroComponent
app.HeroComponent = HeroComponent;
HeroComponent.annotations = [
new ng.core.Component({
selector: 'hero-io',
templateUrl: 'app/hero-io.component.html'
})
];
function HeroComponent() { }
HeroComponent.prototype.onOk = function() {
this.okClicked = true;
}
HeroComponent.prototype.onCancel = function() {
this.cancelClicked = true;
}
app.HeroIOComponent = app.HeroComponent;
app.HeroComponent = old;
})(window.app = window.app || {});
///// DSL Version ////
(function(app) {
var old = app.HeroComponent
app.HeroComponent = ng.core.Component({
selector: 'hero-io-dsl',
templateUrl: 'app/hero-io-dsl.component.html'
})
.Class({
constructor: function HeroComponent() { },
onOk: function() {
this.okClicked = true;
},
onCancel: function() {
this.cancelClicked = true;
}
});
app.HeroIODslComponent = app.HeroComponent;
app.HeroComponent = old;
})(window.app = window.app || {});

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@ -1,52 +0,0 @@
// #docplaster
(function(app) {
var old = app.HeroComponent;
// #docregion
app.HeroComponent = HeroComponent;
HeroComponent.annotations = [
new ng.core.Component({
selector: 'hero-lifecycle',
template: '<h1>Hero: {{name}}</h1>'
})
];
function HeroComponent() { }
HeroComponent.prototype.ngOnInit = function() {
// todo: fetch from server async
setTimeout(() => this.name = 'Windstorm', 0);
};
// #enddocregion
app.HeroLifecycleComponent = app.HeroComponent;
app.HeroComponent = old;
})(window.app = window.app || {});
/////// DSL version ////
(function(app) {
var old = app.HeroComponent;
// #docregion dsl
app.HeroComponent = ng.core.Component({
selector: 'hero-lifecycle-dsl',
template: '<h1>Hero: {{name}}</h1>'
})
.Class({
constructor: function HeroComponent() { },
ngOnInit: function() {
// todo: fetch from server async
setTimeout(() => this.name = 'Windstorm', 0);
}
});
// #enddocregion dsl
app.HeroLifecycleDslComponent = app.HeroComponent;
app.HeroComponent = old;
})(window.app = window.app || {});

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@ -1,92 +0,0 @@
(function(app) {
app.heroQueries = app.heroQueries || {};
app.heroQueries.ContentChildComponent = ng.core.Component({
selector: 'content-child',
template:
'<span class="content-child" *ngIf="active">' +
'Active' +
'</span>'
}).Class({
constructor: function ContentChildComponent() {
this.active = false;
},
activate: function() {
this.active = !this.active;
}
});
////////////////////
// #docregion content
app.heroQueries.ViewChildComponent = ng.core.Component({
selector: 'view-child',
template:
'<h2 [class.active]=active>' +
'{{hero.name}} ' +
'<ng-content></ng-content>' +
'</h2>',
styles: ['.active {font-weight: bold; background-color: skyblue;}'],
inputs: ['hero'],
queries: {
content: new ng.core.ContentChild(app.heroQueries.ContentChildComponent)
}
})
.Class({
constructor: function HeroQueriesHeroComponent() {
this.active = false;
},
activate: function() {
this.active = !this.active;
this.content.activate();
}
});
// #enddocregion content
////////////////////
// #docregion view
app.heroQueries.HeroQueriesComponent = ng.core.Component({
selector: 'hero-queries',
template:
'<view-child *ngFor="let hero of heroData" [hero]="hero">' +
'<content-child></content-child>' +
'</view-child>' +
'<button (click)="activate()">{{buttonLabel}} All</button>',
queries: {
views: new ng.core.ViewChildren(app.heroQueries.ViewChildComponent)
}
})
.Class({
constructor: function HeroQueriesComponent() {
this.active = false;
this.heroData = [
{id: 1, name: 'Windstorm'},
{id: 2, name: 'LaughingGas'}
];
},
activate: function() {
this.active = !this.active;
this.views.forEach(function(view) {
view.activate();
});
},
});
// #docregion defined-property
// add prototype property w/ getter outside the DSL
var proto = app.heroQueries.HeroQueriesComponent.prototype;
Object.defineProperty(proto, "buttonLabel", {
get: function () {
return this.active ? 'Deactivate' : 'Activate';
},
enumerable: true
});
// #enddocregion defined-property
// #enddocregion view
})(window.app = window.app || {});

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@ -1,4 +0,0 @@
<!-- #docregion -->
<h1>{{titlePrefix}} {{title}}</h1>
<button (click)="ok()">OK</button>
<p>{{ msg }}</p>

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@ -1,64 +0,0 @@
(function(app) {
// #docregion
app.HeroTitleComponent = HeroTitleComponent;
// #docregion templateUrl
HeroTitleComponent.annotations = [
new ng.core.Component({
selector: 'hero-title',
templateUrl: 'app/hero-title.component.html'
})
];
// #enddocregion templateUrl
function HeroTitleComponent(titlePrefix, title) {
this.titlePrefix = titlePrefix;
this.title = title;
this.msg = '';
}
HeroTitleComponent.prototype.ok = function() {
this.msg = 'OK!';
}
HeroTitleComponent.parameters = [
[new ng.core.Optional(), new ng.core.Inject('titlePrefix')],
[new ng.core.Attribute('title')]
];
// #enddocregion
})(window.app = window.app || {});
////////// DSL version ////////////
(function(app) {
var old = app.HeroTitleComponent;
// #docregion dsl
app.HeroTitleComponent = ng.core.Component({
selector: 'hero-title-dsl',
templateUrl: 'app/hero-title.component.html'
})
.Class({
constructor: [
[ new ng.core.Optional(), new ng.core.Inject('titlePrefix') ],
new ng.core.Attribute('title'),
function HeroTitleComponent(titlePrefix, title) {
this.titlePrefix = titlePrefix;
this.title = title;
this.msg = '';
}
],
ok: function() {
this.msg = 'OK!';
}
});
// #enddocregion dsl
app.HeroTitleDslComponent = app.HeroTitleComponent;
app.HeroTitleComponent = old;
})(window.app = window.app || {});

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@ -1,53 +0,0 @@
// #docplaster
(function(app) {
// #docregion
// #docregion appexport
// #docregion metadata
app.HeroComponent = HeroComponent; // "export"
HeroComponent.annotations = [
new ng.core.Component({
selector: 'hero-view',
template: '<h1>{{title}}: {{getName()}}</h1>'
})
];
// #docregion constructorproto
function HeroComponent() {
this.title = "Hero Detail";
}
HeroComponent.prototype.getName = function() { return 'Windstorm'; };
// #enddocregion constructorproto
// #enddocregion metadata
// #enddocregion appexport
// #enddocregion
})(window.app = window.app || {});
//////////// DSL version ///////////
(function(app) {
var old = app.HeroComponent;
// #docregion dsl
app.HeroComponent = ng.core.Component({
selector: 'hero-view-dsl',
template: '<h1>{{title}}: {{getName()}}</h1>',
})
.Class({
constructor: function HeroComponent() {
this.title = "Hero Detail";
},
getName: function() { return 'Windstorm'; }
});
// #enddocregion dsl
app.HeroDslComponent = app.HeroComponent;
app.HeroComponent = old;
})(window.app = window.app || {});

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@ -1,43 +0,0 @@
<!DOCTYPE html>
<html>
<head>
<base href="/">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="styles.css">
<title>TypeScript to JavaScript</title>
<script src="node_modules/core-js/client/shim.min.js"></script>
<script src="node_modules/zone.js/dist/zone.js"></script>
<!-- Angular and RxJS umd scripts -->
<script src="node_modules/rxjs/bundles/Rx.js"></script>
<script src="node_modules/@angular/core/bundles/core.umd.js"></script>
<script src="node_modules/@angular/common/bundles/common.umd.js"></script>
<script src="node_modules/@angular/compiler/bundles/compiler.umd.js"></script>
<script src="node_modules/@angular/platform-browser/bundles/platform-browser.umd.js"></script>
<script src="node_modules/@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js"></script>
<!-- Application scripts -->
<script src="app/app.component.js"></script>
<script src="app/confirm.component.js"></script>
<script src="app/data.service.js"></script>
<script src="app/hero.component.js"></script>
<script src="app/hero-io.component.js"></script>
<script src="app/hero-di.component.js"></script>
<script src="app/hero-di-inject.component.js"></script>
<script src="app/hero-di-inject-additional.component.js"></script>
<script src="app/hero-host.component.js"></script>
<script src="app/hero-lifecycle.component.js"></script>
<script src="app/hero-queries.component.js"></script>
<script src="app/hero-title.component.js"></script>
<script src="app/app.module.js"></script>
<script src="main.js"></script>
</head>
<body>
<my-app>Loading...</my-app>
</body>
</html>

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@ -1,9 +0,0 @@
(function(app) {
var platformBrowserDynamic = ng.platformBrowserDynamic.platformBrowserDynamic;
document.addEventListener('DOMContentLoaded', function() {
platformBrowserDynamic().bootstrapModule(app.AppModule);
});
})(window.app = window.app || {});

0
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@ -1,9 +0,0 @@
{
"description": "TypeScript to JavaScript",
"basePath": "src/",
"files":[
"!**/*.d.ts",
"!**/*.js"
],
"tags":["cookbook"]
}

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@ -1,31 +0,0 @@
<a id="toc"></a>
<h1>{{title}}</h1>
<a href="#class-metadata">Classes and Class Metadata</a><br>
<a href="#io-metadata">Input and Output Decorators</a><br>
<a href="#dependency-injection">Dependency Injection</a><br>
<a href="#host-metadata">Host Metadata</a><br>
<a href="#view-child-metadata">View and Child Metadata</a><br>
<hr>
<h4 id="class-metadata">Classes and Class Metadata</h4>
<hero-view></hero-view>
<hero-lifecycle></hero-lifecycle>
<hr>
<h4 id="io-metadata">Input and Output Metadata</h4>
<hero-io></hero-io>
<hr>
<h4 id="dependency-injection">Dependency Injection</h4>
<hero-di></hero-di>
<hero-di-inject></hero-di-inject>
<hero-di-inject-additional></hero-di-inject-additional>
<hr>
<h4 id="host-metadata">Host Metadata</h4>
<hero-host></hero-host>
<hero-host-meta></hero-host-meta>
<hr>
<h4 id="view-child-metadata">View and Child Metadata</h4>
<hero-queries></hero-queries>

14
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@ -1,14 +0,0 @@
import { Component } from '@angular/core';
@Component({
selector: 'my-app',
templateUrl: './app.component.html',
styles: [
// See hero-di-inject-additional.component
'hero-host, hero-host-meta { border: 1px dashed black; display: block; padding: 4px;}',
'.heading {font-style: italic}'
]
})
export class AppComponent {
title = 'TypeScript';
}

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@ -1,56 +0,0 @@
/* tslint:disable-next-line:no-unused-variable */
import { NgModule, NO_ERRORS_SCHEMA } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { ConfirmComponent } from './confirm.component';
// #docregion appimport
import { HeroComponent } from './hero.component';
// #enddocregion appimport
import { HeroComponent as HeroDIComponent } from './hero-di.component';
import { HeroComponent as HeroDIInjectComponent } from './hero-di-inject.component';
import { HeroComponent as HeroDIInjectAdditionalComponent } from './hero-di-inject-additional.component';
import { HeroHostComponent } from './hero-host.component';
import { HeroHostMetaComponent } from './hero-host-meta.component';
import { HeroIOComponent } from './hero-io.component';
import { HeroComponent as HeroLifecycleComponent } from './hero-lifecycle.component';
import { HeroQueriesComponent, ViewChildComponent, ContentChildComponent } from './hero-queries.component';
import { HeroTitleComponent } from './hero-title.component';
import { DataService } from './data.service';
@NgModule({
imports: [
BrowserModule
],
declarations: [
AppComponent,
ConfirmComponent,
HeroComponent,
HeroDIComponent,
HeroDIInjectComponent,
HeroDIInjectAdditionalComponent,
HeroHostComponent, HeroHostMetaComponent,
HeroIOComponent,
HeroLifecycleComponent,
HeroQueriesComponent, ViewChildComponent, ContentChildComponent,
HeroTitleComponent
],
providers: [
DataService,
{ provide: 'heroName', useValue: 'Windstorm' }
],
bootstrap: [ AppComponent ],
// schemas: [ NO_ERRORS_SCHEMA ] // helpful for debugging!
})
export class AppModule { }
/* tslint:disable no-unused-variable */
// #docregion ng2import
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import {
LocationStrategy,
HashLocationStrategy
} from '@angular/common';
// #enddocregion ng2import

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@ -1,6 +0,0 @@
<button (click)="onOkClick()">
{{okMsg}}
</button>
<button (click)="onNotOkClick()">
{{notOkMsg}}
</button>

21
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@ -1,21 +0,0 @@
import { Component, EventEmitter, Input, Output } from '@angular/core';
// #docregion
@Component({
selector: 'app-confirm',
templateUrl: './confirm.component.html'
})
export class ConfirmComponent {
@Input() okMsg = '';
@Input('cancelMsg') notOkMsg = '';
@Output() ok = new EventEmitter();
@Output('cancel') notOk = new EventEmitter();
onOkClick() {
this.ok.emit(true);
}
onNotOkClick() {
this.notOk.emit(true);
}
}
// #enddocregion

10
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@ -1,10 +0,0 @@
import { Injectable } from '@angular/core';
@Injectable()
export class DataService {
constructor() { }
getHeroName() {
return 'Windstorm';
}
}

7
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@ -1,7 +0,0 @@
import { Component } from '@angular/core';
@Component({
selector: 'hero-di-inject-additional',
template: `<hero-title title="Tour of Heroes"></hero-title>`
})
export class HeroComponent { }

11
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@ -1,11 +0,0 @@
import { Component, Inject } from '@angular/core';
// #docregion
@Component({
selector: 'hero-di-inject',
template: `<h1>Hero: {{name}}</h1>`
})
export class HeroComponent {
constructor(@Inject('heroName') private name: string) { }
}
// #enddocregion

15
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@ -1,15 +0,0 @@
// #docregion
import { Component } from '@angular/core';
import { DataService } from './data.service';
@Component({
selector: 'hero-di',
template: `<h1>Hero: {{name}}</h1>`
})
export class HeroComponent {
name = '';
constructor(dataService: DataService) {
this.name = dataService.getHeroName();
}
}
// #enddocregion

44
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@ -1,44 +0,0 @@
import { Component } from '@angular/core';
// #docregion
@Component({
selector: 'hero-host-meta',
template: `
<h1 [class.active]="active">Hero Host in Metadata</h1>
<div>Heading clicks: {{clicks}}</div>
`,
host: {
// HostBindings to the <hero-host-meta> element
'[title]': 'title',
'[class.heading]': 'headingClass',
// HostListeners on the entire <hero-host-meta> element
'(click)': 'clicked()',
'(mouseenter)': 'enter($event)',
'(mouseleave)': 'leave($event)'
},
// Styles within (but excluding) the <hero-host-meta> element
styles: ['.active {background-color: coral;}']
})
export class HeroHostMetaComponent {
title = 'Hero Host in Metadata Tooltip';
headingClass = true;
active = false;
clicks = 0;
clicked() {
this.clicks += 1;
}
enter(event: Event) {
this.active = true;
this.headingClass = false;
}
leave(event: Event) {
this.active = false;
this.headingClass = true;
}
}
// #enddocregion

39
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@ -1,39 +0,0 @@
import { Component, HostBinding, HostListener } from '@angular/core';
// #docregion
@Component({
selector: 'hero-host',
template: `
<h1 [class.active]="active">Hero Host in Decorators</h1>
<div>Heading clicks: {{clicks}}</div>
`,
// Styles within (but excluding) the <hero-host> element
styles: ['.active {background-color: yellow;}']
})
export class HeroHostComponent {
// HostBindings to the <hero-host> element
@HostBinding() title = 'Hero Host in Decorators Tooltip';
@HostBinding('class.heading') headingClass = true;
active = false;
clicks = 0;
// HostListeners on the entire <hero-host> element
@HostListener('click')
clicked() {
this.clicks += 1;
}
@HostListener('mouseenter', ['$event'])
enter(event: Event) {
this.active = true;
this.headingClass = false;
}
@HostListener('mouseleave', ['$event'])
leave(event: Event) {
this.active = false;
this.headingClass = true;
}
}
// #enddocregion

26
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@ -1,26 +0,0 @@
import { Component } from '@angular/core';
@Component({
selector: 'hero-io',
template: `
<app-confirm [okMsg]="'OK'"
[cancelMsg]="'Cancel'"
(ok)="onOk()"
(cancel)="onCancel()">
</app-confirm>
<span *ngIf="okClicked">OK clicked</span>
<span *ngIf="cancelClicked">Cancel clicked</span>
`
})
export class HeroIOComponent {
okClicked = false;
cancelClicked = false;
onOk() {
this.okClicked = true;
}
onCancel() {
this.cancelClicked = true;
}
}

14
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@ -1,14 +0,0 @@
// #docregion
import { Component, OnInit } from '@angular/core';
@Component({
selector: 'hero-lifecycle',
template: `<h1>Hero: {{name}}</h1>`
})
export class HeroComponent implements OnInit {
name: string;
ngOnInit() {
// todo: fetch from server async
setTimeout(() => this.name = 'Windstorm', 0);
}
}

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@ -1,83 +0,0 @@
import {
Component,
ContentChild,
Input,
QueryList,
ViewChildren
} from '@angular/core';
@Component({
selector: 'content-child',
template: `
<span class="content-child" *ngIf="active">
Active
</span>`
})
export class ContentChildComponent {
active = false;
activate() {
this.active = !this.active;
}
}
////////////////////
// #docregion content
@Component({
selector: 'view-child',
template: `
<h2 [class.active]=active>
{{hero.name}}
<ng-content></ng-content>
</h2>`,
styles: ['.active {font-weight: bold; background-color: skyblue;}']
})
export class ViewChildComponent {
@Input() hero: any;
active = false;
@ContentChild(ContentChildComponent) content: ContentChildComponent;
activate() {
this.active = !this.active;
this.content.activate();
}
}
// #enddocregion content
////////////////////
// #docregion view
@Component({
selector: 'hero-queries',
template: `
<view-child *ngFor="let hero of heroData" [hero]="hero">
<content-child></content-child>
</view-child>
<button (click)="activate()">{{buttonLabel}} All</button>
`
})
export class HeroQueriesComponent {
active = false;
heroData = [
{id: 1, name: 'Windstorm'},
{id: 2, name: 'LaughingGas'}
];
@ViewChildren(ViewChildComponent) views: QueryList<ViewChildComponent>;
activate() {
this.active = !this.active;
this.views.forEach(
view => view.activate()
);
}
// #docregion defined-property
get buttonLabel() {
return this.active ? 'Deactivate' : 'Activate';
}
// #enddocregion defined-property
}
// #enddocregion view

4
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@ -1,4 +0,0 @@
<!-- #docregion -->
<h1>{{titlePrefix}} {{title}}</h1>
<button (click)="ok()">OK</button>
<p>{{ msg }}</p>

21
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@ -1,21 +0,0 @@
import { Attribute, Component, Inject, Optional } from '@angular/core';
// #docregion
// #docregion templateUrl
@Component({
selector: 'hero-title',
templateUrl: './hero-title.component.html'
})
// #enddocregion templateUrl
export class HeroTitleComponent {
msg = '';
constructor(
@Inject('titlePrefix') @Optional() private titlePrefix: string,
@Attribute('title') private title: string
) { }
ok() {
this.msg = 'OK!';
}
}
// #enddocregion

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@ -1,15 +0,0 @@
// #docregion
// #docregion metadata
import { Component } from '@angular/core';
@Component({
selector: 'hero-view',
template: '<h1>{{title}}: {{getName()}}</h1>'
})
// #docregion appexport, class
export class HeroComponent {
title = 'Hero Detail';
getName() {return 'Windstorm'; }
}
// #enddocregion appexport, class
// #enddocregion metadata

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@ -1,26 +0,0 @@
<!DOCTYPE html>
<html>
<head>
<base href="/">
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="styles.css">
<title>TypeScript to JavaScript</title>
<!-- Polyfills -->
<script src="node_modules/core-js/client/shim.min.js"></script>
<script src="node_modules/zone.js/dist/zone.js"></script>
<script src="node_modules/systemjs/dist/system.src.js"></script>
<script src="systemjs.config.js"></script>
<script>
System.import('main.js').catch(function(err){ console.error(err); });
</script>
</head>
<body>
<my-app>Loading...</my-app>
</body>
</html>

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@ -1,4 +0,0 @@
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { AppModule } from './app/app.module';
platformBrowserDynamic().bootstrapModule(AppModule);

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@ -120,8 +120,8 @@ The documentation for the version prior to v.2.2.0 has been removed.
## ES6 described in "TypeScript to JavaScript" (2016-11-14) ## ES6 described in "TypeScript to JavaScript" (2016-11-14)
The updated [TypeScript to JavaScript](guide/ts-to-js) guide The updated TypeScript to JavaScript guide (removed August 2017, PR #18694)
now explains how to write apps in ES6/7 explains how to write apps in ES6/7
by translating the common idioms in the TypeScript documentation examples by translating the common idioms in the TypeScript documentation examples
(and elsewhere on the web) to ES6/7 and ES5. (and elsewhere on the web) to ES6/7 and ES5.

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@ -1,621 +0,0 @@
# TypeScript to JavaScript
## Introduction
Anything you can do with Angular in _TypeScript_, you can also do
in JavaScript. Translating from one language to the other is mostly a
matter of changing the way you organize your code and access Angular APIs.
_TypeScript_ is a popular language option for Angular development.
Most code examples on the Internet as well as on this site are written in _TypeScript_.
This cookbook contains recipes for translating _TypeScript_
code examples to _ES6_ and to _ES5_ so that JavaScript developers
can read and write Angular apps in their preferred dialect.
Run and compare the live <live-example name="ts-to-js/ts">TypeScript</live-example> and <live-example name="ts-to-js/js">JavaScript</live-example>
code shown in this cookbook.
## _TypeScript_ to _ES6_ to _ES5_
_TypeScript_
<a href="https://www.typescriptlang.org" title='"TypeScript is a typed, superset of JavaScript"'>is a typed superset of _ES6 JavaScript_</a>.
_ES6 JavaScript_ is a superset of _ES5 JavaScript_. _ES5_ is the kind of JavaScript that runs natively in all modern browsers.
The transformation of _TypeScript_ code all the way down to _ES5_ code can be seen as "shedding" features.
The downgrade progression is as follows:
* _TypeScript_ to _ES6-with-decorators_.
* _ES6-with-decorators_ to _ES6-without-decorators_ ("_plain ES6_").
* _ES6-without-decorators_ to _ES5_.
When translating from _TypeScript_ to _ES6-with-decorators_, remove
[class property access modifiers](http://www.typescriptlang.org/docs/handbook/classes.html#public-private-and-protected-modifiers)
such as `public` and `private`.
Remove most of the
[type declarations](https://www.typescriptlang.org/docs/handbook/basic-types.html),
such as `:string` and `:boolean`
but **keep the constructor parameter types, which are used for dependency injection**.
From _ES6-with-decorators_ to _plain ES6_, remove all
[decorators](https://www.typescriptlang.org/docs/handbook/decorators.html)
and the remaining types.
You must declare properties in the class constructor (`this.title = '...'`) rather than in the body of the class.
Finally, from _plain ES6_ to _ES5_, the main missing features are `import`
statements and `class` declarations.
For _plain ES6_ transpilation you can _start_ with a setup similar to the
[_TypeScript_ quickstart](https://github.com/angular/quickstart) and adjust the application code accordingly.
Transpile with [Babel](https://babeljs.io/) using the `es2015` preset.
To use decorators and annotations with Babel, install the
[`angular2`](https://github.com/shuhei/babel-plugin-angular2-annotations) preset as well.
{@a modularity}
## Importing and Exporting
### Importing Angular Code
In both _TypeScript_ and _ES6_, you import Angular classes, functions, and other members with _ES6_ `import` statements.
In _ES5_, you access the Angular entities of the [the Angular packages](guide/glossary#scoped-package)
through the global `ng` object.
Anything you can import from `@angular` is a nested member of this `ng` object:
<code-tabs>
<code-pane title="TypeScript" path="ts-to-js/ts/src/app/app.module.ts" region="ng2import">
</code-pane>
<code-pane title="ES6 + Decorators" path="ts-to-js/js-es6-decorators/src/app/app.module.es6" region="ng2import">
</code-pane>
<code-pane title="ES6 JavaScript" path="ts-to-js/js-es6/src/app/app.module.es6" region="ng2import">
</code-pane>
<code-pane title="ES5 JavaScript" path="ts-to-js/js/src/app/app.module.js" region="ng2import">
</code-pane>
</code-tabs>
### Exporting application code
Each file in a _TypeScript_ or _ES6_ Angular application constitutes an _ES6_ module.
When you want to make something available to other modules, you `export` it.
_ES5_ lacks native support for modules.
In an Angular _ES5_ application, you load each file manually by adding a `<script>` tag to `index.html`.
<div class="alert is-important">
The order of `<script>` tags is often significant.
You must load a file that defines a public JavaScript entity before a file that references that entity.
</div>
The best practice in _ES5_ is to create a form of modularity that avoids polluting the global scope.
Add one application namespace object such as `app` to the global `document`.
Then each code file "exports" public entities by attaching them to that namespace object, for example, `app.HeroComponent`.
You could factor a large application into several sub-namespaces
which leads to "exports" along the lines of `app.heroQueries.HeroComponent`.
Every _ES5_ file should wrap code in an
[Immediately Invoked Function Expression (IIFE)](https://en.wikipedia.org/wiki/Immediately-invoked_function_expression)
to limit unintentional leaking of private symbols into the global scope.
Here is a `HeroComponent` as it might be defined and "exported" in each of the four language variants.
<code-tabs>
<code-pane title="TypeScript" path="ts-to-js/ts/src/app/hero.component.ts" region="appexport">
</code-pane>
<code-pane title="ES6 + Decorators" path="ts-to-js/js-es6-decorators/src/app/hero.component.es6" region="appexport">
</code-pane>
<code-pane title="ES6 JavaScript" path="ts-to-js/js-es6/src/app/hero.component.es6" region="appexport">
</code-pane>
<code-pane title="ES5 JavaScript" path="ts-to-js/js/src/app/hero.component.js" region="appexport">
</code-pane>
</code-tabs>
### Importing application Code
In _TypeScript_ and _ES6_ apps, you `import` things that have been exported from other modules.
In _ES5_ you use the shared namespace object to access "exported" entities from other files.
<code-tabs>
<code-pane title="TypeScript" path="ts-to-js/ts/src/app/app.module.ts" region="appimport">
</code-pane>
<code-pane title="ES6 + Decorators" path="ts-to-js/js-es6-decorators/src/app/app.module.es6" region="appimport">
</code-pane>
<code-pane title="ES6 JavaScript" path="ts-to-js/js-es6/src/app/app.module.es6" region="appimport">
</code-pane>
<code-pane title="ES5 JavaScript" path="ts-to-js/js/src/app/app.module.js" region="appimport">
</code-pane>
</code-tabs>
<div class="alert is-helpful">
Alternatively, you can use a module loader such as Webpack or
Browserify in an Angular JavaScript project. In such a project, you would
use _CommonJS_ modules and the `require` function to load Angular framework code.
Then use `module.exports` and `require` to export and import application code.
</div>
{@a class-metadata}
## Classes and Class Metadata
### Classes
Most Angular _TypeScript_ and _ES6_ code is written as classes.
Properties and method parameters of _TypeScript_ classes may be marked with the access modifiers
`private`, `internal`, and `public`.
Remove these modifiers when translating to JavaScript.
Most type declarations, for example, `:string` and `:boolean`, should be removed when translating to JavaScript.
When translating to _ES6-with-decorators_, ***do not remove types from constructor parameters!***
Look for types in _TypeScript_ property declarations.
In general it is better to initialize such properties with default values because
many browser JavaScript engines can generate more performant code.
When _TypeScript_ code follows this same advice, it can infer the property types
and there is nothing to remove during translation.
In _ES6-without-decorators_, properties of classes must be assigned inside the constructor.
_ES5_ JavaScript has no classes.
Use the constructor function pattern instead, adding methods to the prototype.
<code-tabs>
<code-pane title="TypeScript" path="ts-to-js/ts/src/app/hero.component.ts" region="class">
</code-pane>
<code-pane title="ES6 + Decorators" path="ts-to-js/js-es6-decorators/src/app/hero.component.es6" region="class">
</code-pane>
<code-pane title="ES6 JavaScript" path="ts-to-js/js-es6/src/app/hero.component.es6" region="class">
</code-pane>
<code-pane title="ES5 JavaScript" path="ts-to-js/js/src/app/hero.component.js" region="constructorproto">
</code-pane>
</code-tabs>
### Metadata
When writing in _TypeScript_ or _ES6-with-decorators_,
provide configuration and metadata by adorning a class with one or more *decorators*.
For example, you supply metadata to a component class by preceding its definition with a
[`@Component`](api/core/Component) decorator function whose
argument is an object literal with metadata properties.
In _plain ES6_, you provide metadata by attaching an `annotations` array to the _class_.
Each item in the array is a new instance of a metadata decorator created with a similar metadata object literal.
In _ES5_, you also provide an `annotations` array but you attach it to the _constructor function_ rather than to a class.
See these variations side-by-side:
<code-tabs>
<code-pane title="TypeScript" path="ts-to-js/ts/src/app/hero.component.ts" region="metadata">
</code-pane>
<code-pane title="ES6 + Decorators" path="ts-to-js/js-es6-decorators/src/app/hero.component.es6" region="metadata">
</code-pane>
<code-pane title="ES6 JavaScript" path="ts-to-js/js-es6/src/app/hero.component.es6" region="metadata">
</code-pane>
<code-pane title="ES5 JavaScript" path="ts-to-js/js/src/app/hero.component.js" region="metadata">
</code-pane>
</code-tabs>
## External template file
A large component template is often kept in a separate template file.
<code-example path="ts-to-js/ts/src/app/hero-title.component.html" title="src/app/hero-title.component.html" linenums="false">
</code-example>
The component, `HeroTitleComponent` in this case, then references the template file in its metadata `templateUrl` property:
<code-tabs>
<code-pane title="TypeScript" path="ts-to-js/ts/src/app/hero-title.component.ts" region="templateUrl">
</code-pane>
<code-pane title="ES6 + Decorators" path="ts-to-js/js-es6-decorators/src/app/hero-title.component.es6" region="templateUrl">
</code-pane>
<code-pane title="ES6 JavaScript" path="ts-to-js/js-es6/src/app/hero-title.component.es6" region="templateUrl">
</code-pane>
<code-pane title="ES5 JavaScript" path="ts-to-js/js/src/app/hero-title.component.js" region="templateUrl">
</code-pane>
</code-tabs>
Note that both the _TypeScript_ and _ES6_ `templateUrl` properties identify the location of the template file _relative to the component module_.
{@a dsl}
## _ES5_ DSL
This _ES5_ pattern of creating a constructor and annotating it with metadata is so common that Angular
provides a convenience API to make it a little more compact and locates the metadata above the constructor,
as you would if you wrote in _TypeScript_ or _ES6-with-decorators_.
This _API_ (_Application Programming Interface_) is commonly known as the _ES5 DSL_ (_Domain Specific Language_).
Set an application namespace property, for example, `app.HeroDslComponent`, to the result of an `ng.core.Component` function call.
Pass the same metadata object to `ng.core.Component` as you did before.
Then chain a call to the `Class()` method which takes an object defining the class constructor and instance methods.
Here is an example of the `HeroComponent`, re-written with the DSL,
next to the original _ES5_ version for comparison:
<code-tabs>
<code-pane title="ES5 JavaScript with DSL" path="ts-to-js/js/src/app/hero.component.js" region="dsl">
</code-pane>
<code-pane title="ES5 JavaScript" path="ts-to-js/js/src/app/hero.component.js">
</code-pane>
</code-tabs>
{@a name-constructor}
<div class="callout is-helpful">
A **named** constructor displays clearly in the console log
if the component throws a runtime error.
An **unnamed** constructor displays as an anonymous function, for example, `class0`,
which is impossible to find in the source code.
</div>
{@a getters-setters}
### Properties with getters and setters
_TypeScript_ and _ES6_ support with getters and setters.
Here's an example of a read-only _TypeScript_ property with a getter
that prepares a toggle-button label for the next clicked state:
<code-example path="ts-to-js/ts/src/app/hero-queries.component.ts" region="defined-property" title="ts/src/app/hero-queries.component.ts" linenums="false">
</code-example>
This _TypeScript_ "getter" property is transpiled to an _ES5_
<a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/defineProperty"
title="Defined Properties">defined property</a>.
The _ES5 DSL_ does not support _defined properties_ directly
but you can still create them by extracting the "class" prototype and
adding the _defined property_ in raw JavaScript like this:
<code-example path="ts-to-js/js/src/app/hero-queries.component.js" region="defined-property" title="js/src/app/hero-queries.component.ts" linenums="false">
</code-example>
{@a dsl-other}
### DSL for other classes
There are similar DSLs for other decorated classes.
You can define a directive with `ng.core.Directive`:
<code-example>
app.MyDirective = ng.core.Directive({
selector: '[myDirective]'
}).Class({
...
});
</code-example>
and a pipe with `ng.core.Pipe`:
<code-example>
app.MyPipe = ng.core.Pipe({
name: 'myPipe'
}).Class({
...
});
</code-example>
{@a interfaces}
## Interfaces
A _TypeScript_ interface helps ensure that a class implements the interface's members correctly.
Always try to use Angular interfaces where appropriate.
For example, the component class that implements the `ngOnInit` lifecycle hook method
should implement the `OnInit` interface.
_TypeScript_ interfaces exist for developer convenience and are not used by Angular at runtime.
They have no physical manifestation in the generated JavaScript code.
Just implement the methods and ignore interfaces when translating code samples from _TypeScript_ to JavaScript.
<code-tabs>
<code-pane title="TypeScript" path="ts-to-js/ts/src/app/hero-lifecycle.component.ts">
</code-pane>
<code-pane title="ES6 + Decorators" path="ts-to-js/js-es6-decorators/src/app/hero-lifecycle.component.es6">
</code-pane>
<code-pane title="ES6 JavaScript" path="ts-to-js/js-es6/src/app/hero-lifecycle.component.es6">
</code-pane>
<code-pane title="ES5 JavaScript" path="ts-to-js/js/src/app/hero-lifecycle.component.js">
</code-pane>
<code-pane title="ES5 JavaScript with DSL" path="ts-to-js/js/src/app/hero-lifecycle.component.js" region="dsl">
</code-pane>
</code-tabs>
{@a io-decorators}
## Input and Output Metadata
### Input and Output Decorators
In _TypeScript_ and _ES6-with-decorators_, you often add metadata to class _properties_ with _property decorators_.
For example, you apply [`@Input` and `@Output` property decorators](guide/template-syntax#inputs-outputs)
to public class properties that will be the target of data binding expressions in parent components.
There is no equivalent of a property decorator in _ES5_ or _plain ES6_.
Fortunately, every property decorator has an equivalent representation in a class decorator metadata property.
A _TypeScript_ `@Input` property decorator can be represented by an item in the `Component` metadata's `inputs` array.
You already know how to add `Component` or `Directive` class metadata in _any_ JavaScript dialect so
there's nothing fundamentally new about adding another property.
But note that what would have been _separate_ `@Input` and `@Output` property decorators for each class property are
combined in the metadata `inputs` and `outputs` _arrays_.
<code-tabs>
<code-pane title="TypeScript" path="ts-to-js/ts/src/app/confirm.component.ts">
</code-pane>
<code-pane title="ES6 + Decorators" path="ts-to-js/js-es6-decorators/src/app/confirm.component.es6">
</code-pane>
<code-pane title="ES6 JavaScript" path="ts-to-js/js-es6/src/app/confirm.component.es6">
</code-pane>
<code-pane title="ES5 JavaScript" path="ts-to-js/js/src/app/confirm.component.js">
</code-pane>
<code-pane title="ES5 JavaScript with DSL" path="ts-to-js/js/src/app/confirm.component.js" region="dsl">
</code-pane>
</code-tabs>
In the previous example, one of the public-facing binding names, `cancelMsg`,
differs from the corresponding class property name, `notOkMsg`.
That's OK but you must tell Angular about it so that it can map an external binding of `cancelMsg`
to the component's `notOkMsg` property.
In _TypeScript_ and _ES6-with-decorators_,
you specify the special binding name in the argument to the property decorator.
In _ES5_ and _plain ES6_ code, convey this pairing with the `propertyName: bindingName` syntax in the class metadata.
{@a dependency-injection}
## Dependency injection
Angular relies heavily on [Dependency Injection](guide/dependency-injection) to provide services to the objects it creates.
When Angular creates a new component, directive, pipe or another service,
it sets the class constructor parameters to instances of services provided by an _Injector_.
The developer must tell Angular what to inject into each parameter.
{@a injection-class-type}
### Injection by class type
The easiest and most popular technique in _TypeScript_ and _ES6-with-decorators_ is to set the constructor parameter type
to the class associated with the service to inject.
The _TypeScript_ transpiler writes parameter type information into the generated JavaScript.
Angular reads that information at runtime and locates the corresponding service in the appropriate _Injector_.
The _ES6-with-decorators_ transpiler does essentially the same thing using the same parameter-typing syntax.
_ES5_ and _plain ES6_ lack types so you must identify "injectables" by attaching a **`parameters`** array to the constructor function.
Each item in the array specifies the service's injection token.
As with _TypeScript_, the most popular token is a class,
or rather a _constructor function_ that represents a class in _ES5_ and _plain ES6_.
The format of the `parameters` array varies:
* _Plain ES6_&mdash;nest each constructor function in a sub-array.
* _ES5_&mdash;simply list the constructor functions.
When writing with _ES5 DSL_, set the `Class.constructor` property to
an array whose first parameters are the injectable constructor functions and whose
last parameter is the class constructor itself.
This format should be familiar to AngularJS developers.
<code-tabs>
<code-pane title="TypeScript" path="ts-to-js/ts/src/app/hero-di.component.ts">
</code-pane>
<code-pane title="ES6 + Decorators" path="ts-to-js/js-es6-decorators/src/app/hero-di.component.es6">
</code-pane>
<code-pane title="ES6 JavaScript" path="ts-to-js/js-es6/src/app/hero-di.component.es6">
</code-pane>
<code-pane title="ES5 JavaScript" path="ts-to-js/js/src/app/hero-di.component.js">
</code-pane>
<code-pane title="ES5 JavaScript with DSL" path="ts-to-js/js/src/app/hero-di.component.js" region="dsl">
</code-pane>
</code-tabs>
### Injection with the @Inject decorator
Sometimes the dependency injection token isn't a class or constructor function.
In _TypeScript_ and _ES6-with-decorators_, you precede the class constructor parameter
by calling the `@Inject()` decorator with the injection token.
In the following example, the token is the string `'heroName'`.
The other JavaScript dialects add a `parameters` array to the class constructor function.
Each item contains a new instance of `Inject`:
* _Plain ES6_&mdash;each item is a new instance of `Inject(token)` in a sub-array.
* _ES5_&mdash;simply list the string tokens.
When writing with _ES5 DSL_, set the `Class.constructor` property to a function definition
array as before. Create a new instance of `ng.core.Inject(token)` for each parameter.
<code-tabs>
<code-pane title="TypeScript" path="ts-to-js/ts/src/app/hero-di-inject.component.ts">
</code-pane>
<code-pane title="ES6 + Decorators" path="ts-to-js/js-es6-decorators/src/app/hero-di-inject.component.es6">
</code-pane>
<code-pane title="ES6 JavaScript" path="ts-to-js/js-es6/src/app/hero-di-inject.component.es6">
</code-pane>
<code-pane title="ES5 JavaScript" path="ts-to-js/js/src/app/hero-di-inject.component.js">
</code-pane>
<code-pane title="ES5 JavaScript with DSL" path="ts-to-js/js/src/app/hero-di-inject.component.js" region="dsl">
</code-pane>
</code-tabs>
### Additional Injection Decorators
You can qualify injection behavior with injection decorators from `@angular/core`.
In _TypeScript_ and _ES6-with-decorators_,
you precede the constructor parameters with injection qualifiers such as:
* [`@Optional`](api/core/Optional) sets the parameter to `null` if the service is missing.
* [`@Attribute`](api/core/Attribute) to inject a host element attribute value.
* [`@ContentChild`](api/core/ContentChild) to inject a content child.
* [`@ViewChild`](api/core/ViewChild) to inject a view child.
* [`@Host`](api/core/Host) to inject a service in this component or its host.
* [`@SkipSelf`](api/core/SkipSelf) to inject a service provided in an ancestor of this component.
In _plain ES6_ and _ES5_, create an instance of the equivalent injection qualifier in a nested array within the `parameters` array.
For example, you'd write `new Optional()` in _plain ES6_ and `new ng.core.Optional()` in _ES5_.
When writing with _ES5 DSL_, set the `Class.constructor` property to a function definition
array as before. Use a nested array to define a parameter's complete injection specification.
<code-tabs>
<code-pane title="TypeScript" path="ts-to-js/ts/src/app/hero-title.component.ts">
</code-pane>
<code-pane title="ES6 + Decorators" path="ts-to-js/js-es6-decorators/src/app/hero-title.component.es6">
</code-pane>
<code-pane title="ES6 JavaScript" path="ts-to-js/js-es6/src/app/hero-title.component.es6">
</code-pane>
<code-pane title="ES5 JavaScript" path="ts-to-js/js/src/app/hero-title.component.js">
</code-pane>
<code-pane title="ES5 JavaScript with DSL" path="ts-to-js/js/src/app/hero-title.component.js" region="dsl">
</code-pane>
</code-tabs>
<div class="l-sub-section">
In the example above, there is no provider for the `'titlePrefix'` token.
Without `@Optional()`, Angular would raise an error.
With `@Optional()`, Angular sets the constructor parameter to `null`
and the component displays the title without a prefix.
</div>
{@a host-binding}
## Host Binding
Angular supports bindings to properties and events of the _host element_, which is the
element whose tag matches the component selector.
### Host Decorators
In _TypeScript_ and _ES6-with-decorators_, you can use host property decorators to bind a host
element to a component or directive.
The [`@HostBinding`](api/core/HostBinding) decorator
binds host element properties to component data properties.
The [`@HostListener`](api/core/HostListener) decorator binds
host element events to component event handlers.
In _plain ES6_ or _ES5_, add a `host` attribute to the component metadata to achieve the
same effect as `@HostBinding` and `@HostListener`.
The `host` value is an object whose properties are host property and listener bindings:
* Each key follows regular Angular binding syntax: `[property]` for host bindings
or `(event)` for host listeners.
* Each value identifies the corresponding component property or method.
<code-tabs>
<code-pane title="TypeScript" path="ts-to-js/ts/src/app/hero-host.component.ts">
</code-pane>
<code-pane title="ES6 + Decorators" path="ts-to-js/js-es6-decorators/src/app/hero-host.component.es6">
</code-pane>
<code-pane title="ES6 JavaScript" path="ts-to-js/js-es6/src/app/hero-host.component.es6">
</code-pane>
<code-pane title="ES5 JavaScript" path="ts-to-js/js/src/app/hero-host.component.js">
</code-pane>
<code-pane title="ES5 JavaScript with DSL" path="ts-to-js/js/src/app/hero-host.component.js" region="dsl">
</code-pane>
</code-tabs>
### Host Metadata
Some developers prefer to specify host properties and listeners
in the component metadata.
They'd _rather_ do it the way you _must_ do it _ES5_ and _plain ES6_.
The following re-implementation of the `HeroComponent` shows that _any property metadata decorator_
can be expressed as component or directive metadata in both _TypeScript_ and _ES6-with-decorators_.
These particular _TypeScript_ and _ES6_ code snippets happen to be identical.
<code-tabs>
<code-pane title="TypeScript" path="ts-to-js/ts/src/app/hero-host-meta.component.ts">
</code-pane>
<code-pane title="ES6 + Decorators" path="ts-to-js/js-es6-decorators/src/app/hero-host-meta.component.es6">
</code-pane>
</code-tabs>
{@a view-child-decorators}
### View and Child Decorators
Several _property_ decorators query a component's nested view and content components.
<div class="l-sub-section">
_View_ children are associated with element tags that appear _within_ the component's template.
_Content_ children are associated with elements that appear _between_ the component's element tags;
they are projected into an `<ng-content>` slot in the component's template.
</div>
The [`@ViewChild`](api/core/ViewChild) and
[`@ViewChildren`](api/core/ViewChildren) property decorators
allow a component to query instances of other components that are used in
its view.
In _ES5_ and _ES6_, you access a component's view children by adding a `queries` property to the component metadata.
The `queries` property value is a hash map.
* Each _key_ is the name of a component property that will hold the view child or children.
* Each _value_ is a new instance of either `ViewChild` or `ViewChildren`.
<code-tabs>
<code-pane title="TypeScript" path="ts-to-js/ts/src/app/hero-queries.component.ts" region="view">
</code-pane>
<code-pane title="ES6 + Decorators" path="ts-to-js/js-es6-decorators/src/app/hero-queries.component.es6" region="view">
</code-pane>
<code-pane title="ES6 JavaScript" path="ts-to-js/js-es6/src/app/hero-queries.component.es6" region="view">
</code-pane>
<code-pane title="ES5 JavaScript with DSL" path="ts-to-js/js/src/app/hero-queries.component.js" region="view">
</code-pane>
</code-tabs>
The [`@ContentChild`](api/core/ContentChild) and
[`@ContentChildren`](api/core/ContentChildren) property decorators
allow a component to query instances of other components that have been projected
into its view from elsewhere.
They can be added in the same way as [`@ViewChild`](api/core/ViewChild) and
[`@ViewChildren`](api/core/ViewChildren).
<code-tabs>
<code-pane title="TypeScript" path="ts-to-js/ts/src/app/hero-queries.component.ts" region="content">
</code-pane>
<code-pane title="ES6 + Decorators" path="ts-to-js/js-es6-decorators/src/app/hero-queries.component.es6" region="content">
</code-pane>
<code-pane title="ES6 JavaScript" path="ts-to-js/js-es6/src/app/hero-queries.component.es6" region="content">
</code-pane>
<code-pane title="ES5 JavaScript with DSL" path="ts-to-js/js/src/app/hero-queries.component.js" region="content">
</code-pane>
</code-tabs>
<div class="alert is-helpful">
In _TypeScript_ and _ES6-with-decorators_ you can also use the `queries` metadata
instead of the `@ViewChild` and `@ContentChild` property decorators.
</div>
{@a aot}
## AOT Compilation in _TypeScript_ only
Angular offers two modes of template compilation, JIT (_just-in-time_) and
[AOT (_ahead-of-time_)](guide/aot-compiler).
Currently the AOT compiler only works with _TypeScript_ applications because, in part, it generates
_TypeScript_ files as an intermediate result.
**AOT is not an option for pure JavaScript applications** at this time.

5
aio/content/navigation.json
View File

@ -298,11 +298,6 @@
"title": "Security", "title": "Security",
"tooltip": "Developing for content security in Angular applications." "tooltip": "Developing for content security in Angular applications."
}, },
{
"url": "guide/ts-to-js",
"title": "TypeScript to JavaScript",
"tooltip": "Convert Angular TypeScript examples into ES6 and ES5 JavaScript."
},
{ {
"title": "Setup & Deployment", "title": "Setup & Deployment",
"tooltip": "Setup and Deployment", "tooltip": "Setup and Deployment",

4
aio/src/app/embedded/code/code.component.ts
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@ -22,8 +22,8 @@ const defaultLineNumsCount = 10; // by default, show linenums over this number
* [code]="variableContainingCode" * [code]="variableContainingCode"
* [language]="ts" * [language]="ts"
* [linenums]="true" * [linenums]="true"
* [path]="ts-to-js/ts/src/app/app.module.ts" * [path]="router/src/app/app.module.ts"
* [region]="ng2import"> * [region]="animations-module">
* </aio-code> * </aio-code>
* ``` * ```
*/ */