docs(style-guide): `./` prefix for template/style URLs and other improvements
This commit is contained in:
Ward Bell
parent
4ec1736f18
commit
0056a68ec8
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@ -3,7 +3,7 @@
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/* avoid */
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import { ExceptionService, SpinnerService, ToastService } from '../../core';
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import { Http, Response } from '@angular/http';
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import { Http } from '@angular/http';
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import { Injectable } from '@angular/core';
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import { Hero } from './hero.model';
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// #enddocregion example
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@ -20,12 +20,12 @@ export class HeroService {
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getHero(id: number) {
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return this.http.get(`api/heroes/${id}`)
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.map((res: Response) => res.json().data);
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.map(response => response.json().data as Hero);
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}
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getHeroes() {
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return this.http.get(`api/heroes`)
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.map((res: Response) => res.json().data);
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.map(response => response.json().data as Hero[]);
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}
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}
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@ -1,7 +1,7 @@
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// #docregion
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// #docregion example
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import { Injectable } from '@angular/core';
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import { Http, Response } from '@angular/http';
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import { Http } from '@angular/http';
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import { Hero } from './hero.model';
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import { ExceptionService, SpinnerService, ToastService } from '../../core';
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@ -20,12 +20,12 @@ export class HeroService {
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getHero(id: number) {
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return this.http.get(`api/heroes/${id}`)
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.map((res: Response) => res.json().data);
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.map(response => response.json().data as Hero);
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}
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getHeroes() {
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return this.http.get(`api/heroes`)
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.map((res: Response) => res.json().data);
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.map(response => response.json().data as Hero[]);
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}
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}
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@ -1,21 +1,12 @@
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// #docplaster
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// #docregion
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// #docregion example
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import { Component, OnInit } from '@angular/core';
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@Component({
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// #enddocregion example
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moduleId: module.id,
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// #docregion example
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selector: 'toh-heroes',
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templateUrl: './heroes.component.html'
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})
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export class HeroesComponent implements OnInit {
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// #enddocregion example
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// #docregion example
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constructor() { }
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constructor() { /* ... */ }
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ngOnInit() { }
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ngOnInit() { /* ... */ }
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}
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// #enddocregion example
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@ -1,23 +1,14 @@
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// #docplaster
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// #docregion
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// #docregion example
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import { Component, OnInit } from '@angular/core';
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import { Component } from '@angular/core';
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import { FilterTextService } from '../shared/filter-text/filter-text.service';
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@Component({
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// #enddocregion example
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moduleId: module.id,
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// #docregion example
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selector: 'toh-heroes',
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templateUrl: './heroes.component.html'
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})
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export class HeroesComponent implements OnInit {
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// #enddocregion example
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// #docregion example
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filteredHeroes: any[] = [];
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constructor(private filterService: FilterTextService) { }
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export class HeroesComponent {
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heroes = [
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{ id: 1, name: 'Windstorm' },
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@ -26,13 +17,12 @@ export class HeroesComponent implements OnInit {
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{ id: 4, name: 'Tornado' }
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];
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filteredHeroes = this.heroes;
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constructor(private filterService: FilterTextService) { }
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filterChanged(searchText: string) {
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this.filteredHeroes = this.filterService.filter(searchText, ['id', 'name'], this.heroes);
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}
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ngOnInit() {
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this.filteredHeroes = this.heroes;
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}
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}
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// #enddocregion example
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@ -1,21 +1,14 @@
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// #docplaster
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// #docregion
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// #docregion example
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import { Component } from '@angular/core';
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import { LoggerService } from '../core/logger.service';
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import { SpinnerService } from '../core/spinner/spinner.service';
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@Component({
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// #enddocregion example
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moduleId: module.id,
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// #docregion example
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selector: 'toh-heroes',
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templateUrl: './heroes.component.html'
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})
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export class HeroesComponent {
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// #enddocregion example
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// #docregion example
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heroes: any[];
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constructor(
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@ -38,4 +31,3 @@ export class HeroesComponent {
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}, 2000);
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}
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}
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// #enddocregion example
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@ -1,20 +1,13 @@
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// #docplaster
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// #docregion
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// #docregion example
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import { Component } from '@angular/core';
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import { LoggerService } from '../core/logger.service';
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@Component({
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// #enddocregion example
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moduleId: module.id,
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// #docregion example
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selector: 'toh-heroes',
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templateUrl: './heroes.component.html'
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})
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export class HeroesComponent {
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// #enddocregion example
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// #docregion example
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heroes: any[];
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constructor(private loggerService: LoggerService) { }
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@ -30,4 +23,3 @@ export class HeroesComponent {
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this.loggerService.log(`We have ${HeroesComponent.length} heroes`);
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}
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}
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// #enddocregion example
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@ -1,13 +1,10 @@
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// #docplaster
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// #docregion
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import { Component } from '@angular/core';
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// #docregion example
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/* avoid */
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@Component({
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// #enddocregion example
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moduleId: module.id,
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// #docregion example
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selector: 'tohHeroButton',
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templateUrl: './hero-button.component.html'
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})
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@ -1,12 +1,8 @@
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// #docplaster
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// #docregion
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import { Component } from '@angular/core';
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// #docregion example
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@Component({
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// #enddocregion example
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moduleId: module.id,
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// #docregion example
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selector: 'toh-hero-button',
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templateUrl: './hero-button.component.html'
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})
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@ -1,13 +1,9 @@
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// #docplaster
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// #docregion
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import { Component } from '@angular/core';
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// #docregion example
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/* avoid */
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@Component({
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// #enddocregion example
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moduleId: module.id,
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// #docregion example
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selector: '[tohHeroButton]',
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templateUrl: './hero-button.component.html'
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})
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@ -1,12 +1,8 @@
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// #docplaster
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// #docregion
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import { Component } from '@angular/core';
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// #docregion example
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@Component({
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// #enddocregion example
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moduleId: module.id,
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// #docregion example
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selector: 'toh-hero-button',
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templateUrl: './hero-button.component.html'
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})
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@ -4,6 +4,7 @@ import { RouterModule } from '@angular/router';
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import { AppComponent } from './app.component';
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import { HeroesComponent } from './heroes';
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import { HeroService } from './heroes/shared';
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@NgModule({
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imports: [
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@ -14,6 +15,7 @@ import { HeroesComponent } from './heroes';
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AppComponent,
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HeroesComponent
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],
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exports: [ AppComponent ]
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exports: [ AppComponent ],
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providers: [ HeroService ]
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})
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export class AppModule {}
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@ -1,7 +1,8 @@
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// #docregion
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import { Component, OnInit } from '@angular/core';
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import { Observable } from 'rxjs/Observable';
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import { Hero, HeroService } from './shared';
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import { Hero } from './shared/hero.model';
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// #docregion example
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/* avoid */
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@ -11,7 +12,7 @@ import { Hero } from './shared/hero.model';
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<div>
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<h2>My Heroes</h2>
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<ul class="heroes">
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<li *ngFor="let hero of heroes">
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<li *ngFor="let hero of heroes | async" (click)="selectedHero=hero">
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<span class="badge">{{hero.id}}</span> {{hero.name}}
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</li>
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</ul>
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@ -51,9 +52,13 @@ import { Hero } from './shared/hero.model';
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`]
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})
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export class HeroesComponent implements OnInit {
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heroes: Hero[];
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heroes: Observable<Hero[]>;
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selectedHero: Hero;
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ngOnInit() {}
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constructor(private heroService: HeroService) { }
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ngOnInit() {
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this.heroes = this.heroService.getHeroes();
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}
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}
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// #enddocregion example
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@ -2,7 +2,7 @@
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<div>
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<h2>My Heroes</h2>
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<ul class="heroes">
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<li *ngFor="let hero of heroes">
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<li *ngFor="let hero of heroes | async" (click)="selectedHero=hero">
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<span class="badge">{{hero.id}}</span> {{hero.name}}
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</li>
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</ul>
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@ -1,22 +1,23 @@
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// #docplaster
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// #docregion
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import { Component, OnInit } from '@angular/core';
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import { Observable } from 'rxjs/Observable';
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import { Hero } from './shared';
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import { Hero, HeroService } from './shared';
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// #docregion example
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@Component({
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// #enddocregion example
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moduleId: module.id,
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// #docregion example
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selector: 'toh-heroes',
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templateUrl: './heroes.component.html',
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styleUrls: ['./heroes.component.css']
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})
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export class HeroesComponent implements OnInit {
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heroes: Hero[];
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heroes: Observable<Hero[]>;
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selectedHero: Hero;
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ngOnInit() { }
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constructor(private heroService: HeroService) { }
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ngOnInit() {
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this.heroes = this.heroService.getHeroes();
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}
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}
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// #enddocregion example
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@ -0,0 +1,18 @@
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import { Injectable } from '@angular/core';
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import { Http } from '@angular/http';
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import { Observable } from 'rxjs/Observable';
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import 'rxjs/add/operator/map';
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import { Hero } from './hero.model';
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@Injectable()
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export class HeroService {
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constructor(private http: Http) {}
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getHeroes(): Observable<Hero[]> {
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return this.http.get('api/heroes')
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.map(resp => resp.json().data as Hero[]);
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}
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}
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@ -1 +1,2 @@
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export * from './hero.model';
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export * from './hero.service';
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@ -1,3 +1,6 @@
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<!-- #docregion -->
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<toh-hero-button label="OK" (change)="doSomething()">
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</toh-hero-button>
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<!-- `heroHighlight` is both the directive name and the data-bound aliased property name -->
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<h3 heroHighlight="skyblue">The Great Bombasto</h3>
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@ -2,7 +2,7 @@ import { NgModule } from '@angular/core';
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import { RouterModule } from '@angular/router';
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import { AppComponent } from './app.component';
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import { HeroButtonComponent } from './heroes';
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import { HeroButtonComponent, HeroHighlightDirective } from './heroes';
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@NgModule({
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imports: [
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@ -10,7 +10,7 @@ import { HeroButtonComponent } from './heroes';
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],
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declarations: [
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AppComponent,
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HeroButtonComponent
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HeroButtonComponent, HeroHighlightDirective
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],
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exports: [ AppComponent ]
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})
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// #docregion
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import { Component, EventEmitter, Input, Output } from '@angular/core';
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// #docregion example
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/* avoid */
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/* avoid pointless aliasing */
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@Component({
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selector: 'toh-hero-button',
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template: `<button>{{label}}</button>`
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})
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export class HeroButtonComponent {
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// Pointless aliases
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@Output('changeEvent') change = new EventEmitter<any>();
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@Input('labelAttribute') label: string;
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}
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@ -7,6 +7,7 @@ import { Component, EventEmitter, Input, Output } from '@angular/core';
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template: `<button>{{label}}</button>`
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})
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export class HeroButtonComponent {
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// No aliases
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@Output() change = new EventEmitter<any>();
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@Input() label: string;
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}
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@ -0,0 +1,15 @@
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// #docregion
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import { Directive, ElementRef, Input, OnChanges } from '@angular/core';
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@Directive({ selector: '[heroHighlight]' })
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export class HeroHighlightDirective implements OnChanges {
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// Aliased because `color` is a better property name than `heroHighlight`
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@Input('heroHighlight') color: string;
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constructor(private el: ElementRef) {}
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ngOnChanges() {
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this.el.nativeElement.style.backgroundColor = this.color || 'yellow';
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}
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}
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@ -1 +1,2 @@
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export * from './hero-button';
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export * from './hero-highlight.directive';
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@ -11,7 +11,7 @@ include ../_util-fns
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.l-main-section
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:marked
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## Style Vocabulary
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## Style vocabulary
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Each guideline describes either a good or bad practice, and all have a consistent presentation.
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@ -35,7 +35,7 @@ include ../_util-fns
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.l-main-section
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:marked
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## File Structure Conventions
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## File structure conventions
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Some code examples display a file that has one or more similarly named companion files.
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For example, `hero.component.ts` and `hero.component.html`.
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@ -46,7 +46,7 @@ include ../_util-fns
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a(id='toc')
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:marked
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## Table of Contents
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## Table of contents
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1. [Single responsibility](#single-responsibility)
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1. [Naming](#naming)
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@ -61,12 +61,14 @@ a(id='toc')
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.l-main-section
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:marked
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## Single Responsibility
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## Single responsibility
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Apply the [Single Responsibility Principle (SPR)](https://wikipedia.org/wiki/Single_responsibility_principle) to all components, services, and other symbols.
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Apply the
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<a href="https://wikipedia.org/wiki/Single_responsibility_principle" target="_blank"><i>Single Responsibility Principle</i> (SPR)</a>
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to all components, services, and other symbols.
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This helps make the app cleaner, easier to read and maintain, and more testable.
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### <a id="01-01"></a>Rule of One
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### <a id="01-01"></a>_Rule of One_
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#### <a href="#01-01">Style 01-01</a>
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.s-rule.do
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:marked
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@ -122,7 +124,7 @@ a(href="#toc") Back to top
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.l-main-section
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:marked
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### <a id="01-02"></a>Small Functions
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### <a id="01-02"></a>Small functions
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#### <a href="#01-02">Style 01-02</a>
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.s-rule.do
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:marked
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@ -189,7 +191,7 @@ a(href="#toc") Back to top
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.l-main-section
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:marked
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### <a id="02-02"></a>Separate File Names with Dots and Dashes
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### <a id="02-02"></a>Separate file names with dots and dashes
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#### <a href="#02-02">Style 02-02</a>
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.s-rule.do
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@ -230,7 +232,7 @@ a(href="#toc") Back to top
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.l-main-section
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:marked
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### <a id="02-03"></a>Symbols and File Names
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### <a id="02-03"></a>Symbols and file names
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#### <a href="#02-03">Style 02-03</a>
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.s-rule.do
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@ -336,7 +338,7 @@ a(href="#toc") Back to top
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.l-main-section
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:marked
|
||||
### <a id="02-04"></a>Service Names
|
||||
### <a id="02-04"></a>Service names
|
||||
#### <a href="#02-04">Style 02-04</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -434,7 +436,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="02-06"></a>Directive Selectors
|
||||
### <a id="02-06"></a>Directive selectors
|
||||
#### <a href="#02-06">Style 02-06</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -453,7 +455,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="02-07"></a>Custom Prefix for Components
|
||||
### <a id="02-07"></a>Custom prefix for components
|
||||
#### <a href="#02-07">Style 02-07</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -495,7 +497,7 @@ a(href="#toc") Back to top
|
|||
:marked
|
||||
|
||||
:marked
|
||||
### <a id="02-08"></a>Custom Prefix for Directives
|
||||
### <a id="02-08"></a>Custom prefix for directives
|
||||
#### <a href="#02-08">Style 02-08</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -524,7 +526,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="02-09"></a>Pipe Names
|
||||
### <a id="02-09"></a>Pipe names
|
||||
#### <a href="#02-09">Style 02-09</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -564,7 +566,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="02-10"></a>Unit Test File Names
|
||||
### <a id="02-10"></a>Unit test file names
|
||||
#### <a href="#02-10">Style 02-10</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -628,7 +630,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="02-11"></a>End to End Test File Names
|
||||
### <a id="02-11"></a>_End-to-End_ (E2E) test file names
|
||||
#### <a href="#02-11">Style 02-11</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -667,7 +669,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="02-12"></a>Angular NgModule Names
|
||||
### <a id="02-12"></a>Angular _NgModule_ names
|
||||
#### <a href="#02-12">Style 02-12</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -759,7 +761,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
## Coding Conventions
|
||||
## Coding conventions
|
||||
|
||||
Have consistent set of coding, naming, and whitespace conventions.
|
||||
|
||||
|
|
@ -881,7 +883,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="03-04"></a>Properties and Methods
|
||||
### <a id="03-04"></a>Properties and methods
|
||||
#### <a href="#03-04">Style 03-04</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -914,7 +916,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="03-06"></a>Import Line Spacing
|
||||
### <a id="03-06"></a>Import line spacing
|
||||
#### <a href="#03-06">Style 03-06</a>
|
||||
|
||||
.s-rule.consider
|
||||
|
|
@ -927,15 +929,15 @@ a(href="#toc") Back to top
|
|||
|
||||
.s-rule.consider
|
||||
:marked
|
||||
**Consider** listing destructured imported assets alphabetically.
|
||||
**Consider** listing destructured imported symbols alphabetically.
|
||||
|
||||
.s-why
|
||||
:marked
|
||||
**Why?** The empty line makes it easy to read and locate imports.
|
||||
**Why?** The empty line separates _your_ stuff from _their_ stuff.
|
||||
|
||||
.s-why.s-why-last
|
||||
:marked
|
||||
**Why?** Alphabetizing makes it easier to read and locate imports.
|
||||
**Why?** Alphabetizing makes it easier to read and locate symbols.
|
||||
|
||||
+makeExample('style-guide/ts/03-06/app/heroes/shared/hero.service.avoid.ts', 'example', 'app/heroes/shared/hero.service.ts')(avoid=1)
|
||||
:marked
|
||||
|
|
@ -947,7 +949,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
## App Structure and Angular Modules
|
||||
## Application structure and Angular modules
|
||||
|
||||
Have a near-term view of implementation and a long-term vision. Start small but keep in mind where the app is heading down the road.
|
||||
|
||||
|
|
@ -963,7 +965,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="04-01"></a>LIFT
|
||||
### <a id="04-01"></a>_LIFT_
|
||||
#### <a href="#04-01">Style 04-01</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -1068,7 +1070,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="04-05"></a>T-DRY (Try to be DRY)
|
||||
### <a id="04-05"></a>_T-DRY_ (Try to be _DRY_)
|
||||
#### <a href="#04-05">Style 04-05</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -1090,7 +1092,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="04-06"></a>Overall Structural Guidelines
|
||||
### <a id="04-06"></a>Overall structural guidelines
|
||||
#### <a href="#04-06">Style 04-06</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -1186,7 +1188,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="04-07"></a>Folders-by-Feature Structure
|
||||
### <a id="04-07"></a>_Folders-by-feature_ structure
|
||||
#### <a href="#04-07">Style 04-07</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -1230,7 +1232,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="04-08"></a>App Root Module
|
||||
### <a id="04-08"></a>App _root module_
|
||||
#### <a href="#04-08">Style 04-08</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -1256,7 +1258,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="04-09"></a>Feature Modules
|
||||
### <a id="04-09"></a>Feature modules
|
||||
#### <a href="#04-09">Style 04-09</a>
|
||||
.s-rule.do
|
||||
|
||||
|
|
@ -1303,7 +1305,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="04-10"></a>Shared Feature Module
|
||||
### <a id="04-10"></a>Shared feature module
|
||||
#### <a href="#04-10">Style 04-10</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -1400,7 +1402,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="04-11"></a>Core Feature Module
|
||||
### <a id="04-11"></a>Core feature module
|
||||
#### <a href="#04-11">Style 04-11</a>
|
||||
|
||||
.s-rule.consider
|
||||
|
|
@ -1531,7 +1533,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="04-12"></a>Prevent Reimport of Core Module
|
||||
### <a id="04-12"></a>Prevent re-import of the core module
|
||||
#### <a href="#04-12">Style 04-12</a>
|
||||
Only the root `AppModule` should import the `CoreModule`.
|
||||
|
||||
|
|
@ -1563,7 +1565,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="04-13"></a>Lazy Loaded Folders
|
||||
### <a id="04-13"></a>Lazy Loaded folders
|
||||
#### <a href="#04-13">Style 04-13</a>
|
||||
A distinct application feature or workflow may be *lazy loaded* or *loaded on demand* rather than when the application starts.
|
||||
|
||||
|
|
@ -1580,7 +1582,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="04-14"></a>Never Directly Import Lazy Loaded Folders
|
||||
### <a id="04-14"></a>Never directly import lazy loaded folders
|
||||
#### <a href="#04-14">Style 04-14</a>
|
||||
|
||||
.s-rule.avoid
|
||||
|
|
@ -1597,7 +1599,7 @@ a(href="#toc") Back to top
|
|||
:marked
|
||||
## Components
|
||||
|
||||
### <a id="05-02"></a>Component Selector Naming
|
||||
### <a id="05-02"></a>Component selector names
|
||||
#### <a href="#05-02">Style 05-02</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -1623,25 +1625,22 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="05-03"></a>Components as Elements
|
||||
### <a id="05-03"></a>Components as elements
|
||||
#### <a href="#05-03">Style 05-03</a>
|
||||
|
||||
.s-rule.do
|
||||
:marked
|
||||
**Do** define components as elements via the selector.
|
||||
**Do** give components an _element_ selector, as opposed to _attribute_ or _class_ selectors.
|
||||
|
||||
.s-why
|
||||
:marked
|
||||
**Why?** components have templates containing HTML and optional Angular template syntax. They are most associated with putting content on a page, and thus are more closely aligned with elements.
|
||||
|
||||
.s-why
|
||||
:marked
|
||||
**Why?** A component represents a visual element on the page.
|
||||
Defining the selector as an HTML element tag is consistent with native HTML elements and WebComponents.
|
||||
**Why?** components have templates containing HTML and optional Angular template syntax.
|
||||
They display content.
|
||||
Developers place components on the page as they would native HTML elements and WebComponents.
|
||||
|
||||
.s-why.s-why-last
|
||||
:marked
|
||||
**Why?** It is easier to recognize that a symbol is a component vs a directive by looking at the template's html.
|
||||
**Why?** It is easier to recognize that a symbol is a component by looking at the template's html.
|
||||
|
||||
+makeExample('style-guide/ts/05-03/app/heroes/shared/hero-button/hero-button.component.avoid.ts', 'example', 'app/heroes/hero-button/hero-button.component.ts')(avoid=1)
|
||||
:marked
|
||||
|
|
@ -1661,7 +1660,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="05-04"></a>Extract Template and Styles to Their Own Files
|
||||
### <a id="05-04"></a>Extract templates and styles to their own files
|
||||
#### <a href="#05-04">Style 05-04</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -1676,13 +1675,33 @@ a(href="#toc") Back to top
|
|||
:marked
|
||||
**Do** name the style file `[component-name].component.css`, where [component-name] is the component name.
|
||||
|
||||
.s-rule.do
|
||||
:marked
|
||||
**Do** specify _component-relative_ URLs, prefixed with `./`, and add `moduleId: module.id` to the component metadata.
|
||||
|
||||
.s-why
|
||||
:marked
|
||||
**Why?** Syntax hints for inline templates in (*.js and *.ts) code files are not supported by some editors.
|
||||
**Why?** Large, inline templates and styles obscure the component's purpose and implementation, reducing readability and maintainability.
|
||||
|
||||
.s-why
|
||||
:marked
|
||||
**Why?** In most editors, syntax hints and code snippets aren't available when developing inline templates and styles.
|
||||
The Angular TypeScript Language Service (forthcoming) promises to overcome this deficiency for HTML templates
|
||||
in those editors that support it; it won't help with CSS styles.
|
||||
|
||||
.s-why
|
||||
:marked
|
||||
**Why?** A _component relative_ URL requires no change when you move the component files, as long as the files stay together.
|
||||
|
||||
.s-why
|
||||
:marked
|
||||
**Why?** The JIT compiler requires the `moduleId` for relative URLs; the AOT compiler,
|
||||
which doesn't need it, safely ignores this property.
|
||||
|
||||
.s-why.s-why-last
|
||||
:marked
|
||||
**Why?** A component file's logic is easier to read when not mixed with inline template and styles.
|
||||
**Why?** The `./` prefix is standard syntax for relative URLs; don't depend on Angular's current ability to do without that prefix.
|
||||
|
||||
|
||||
+makeExample('style-guide/ts/05-04/app/heroes/heroes.component.avoid.ts', 'example', 'app/heroes/heroes.component.ts')(avoid=1)
|
||||
:marked
|
||||
|
|
@ -1701,17 +1720,17 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="05-12"></a>Decorate Input and Output Properties Inline
|
||||
### <a id="05-12"></a>Decorate _input_ and _output_ properties
|
||||
#### <a href="#05-12">Style 05-12</a>
|
||||
|
||||
.s-rule.do
|
||||
:marked
|
||||
**Do** use `@Input` and `@Output` instead of the `inputs` and `outputs` properties of the
|
||||
`@Directive` and `@Component` decorators:
|
||||
**Do** use the `@Input` and `@Output` class decorators instead of the `inputs` and `outputs` properties of the
|
||||
`@Directive` and `@Component` metadata:
|
||||
|
||||
.s-rule.do
|
||||
:marked
|
||||
**Do** place the `@Input()` or `@Output()` on the same line as the property they decorate.
|
||||
**Consider** placing `@Input()` or `@Output()` on the same line as the property it decorates.
|
||||
|
||||
.s-why
|
||||
:marked
|
||||
|
|
@ -1728,7 +1747,8 @@ a(href="#toc") Back to top
|
|||
|
||||
.s-why.s-why-last
|
||||
:marked
|
||||
**Why?** Placing the decorator on the same line makes for shorter code and still easily identifies the property as an input or output.
|
||||
**Why?** Placing the decorator on the same line _usually_ makes for shorter code and still easily identifies the property as an input or output.
|
||||
Put it on the line above when doing so is clearly more readable.
|
||||
|
||||
+makeExample('style-guide/ts/05-12/app/heroes/shared/hero-button/hero-button.component.avoid.ts', 'example', 'app/heroes/shared/hero-button/hero-button.component.ts')(avoid=1)
|
||||
:marked
|
||||
|
|
@ -1740,17 +1760,21 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="05-13"></a>Avoid Renaming Inputs and Outputs
|
||||
### <a id="05-13"></a>Avoid aliasing _inputs_ and _outputs_
|
||||
#### <a href="#05-13">Style 05-13</a>
|
||||
|
||||
.s-rule.avoid
|
||||
:marked
|
||||
**Avoid** renaming inputs and outputs, when possible.
|
||||
**Avoid** _input_ and _output_ aliases except when it serves an important purpose.
|
||||
|
||||
.s-why
|
||||
:marked
|
||||
**Why?** Two names for the same property (one private, one public) is inherently confusing.
|
||||
|
||||
.s-why.s-why-last
|
||||
:marked
|
||||
**Why?** May lead to confusion when the output or the input
|
||||
properties of a given directive are named one way but exported differently as a public API.
|
||||
**Why?** You should use an alias when the directive name is also an _input_ property,
|
||||
and the directive name doesn't describe the property.
|
||||
|
||||
+makeExample('style-guide/ts/05-13/app/heroes/shared/hero-button/hero-button.component.avoid.ts', 'example', 'app/heroes/shared/hero-button/hero-button.component.ts')(avoid=1)
|
||||
:marked
|
||||
|
|
@ -1760,9 +1784,11 @@ a(href="#toc") Back to top
|
|||
|
||||
+makeTabs(
|
||||
`style-guide/ts/05-13/app/heroes/shared/hero-button/hero-button.component.ts,
|
||||
style-guide/ts/05-13/app/heroes/shared/hero-highlight.directive.ts,
|
||||
style-guide/ts/05-13/app/app.component.html`,
|
||||
'example,',
|
||||
`app/heroes/shared/hero-button/hero-button.component.ts,
|
||||
app/heroes/shared/hero-button/hero-highlight.directive.ts,
|
||||
app/app.component.html`)
|
||||
:marked
|
||||
|
||||
|
|
@ -1770,7 +1796,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="05-14"></a>Member Sequence
|
||||
### <a id="05-14"></a>Member sequence
|
||||
#### <a href="#05-14">Style 05-14</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -1796,7 +1822,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="05-15"></a>Put Logic in Services
|
||||
### <a id="05-15"></a>Delegate complex component logic to services
|
||||
#### <a href="#05-14">Style 05-15</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -1833,7 +1859,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="05-16"></a>Don't Prefix Output Properties
|
||||
### <a id="05-16"></a>Don't prefix _output_ properties
|
||||
#### <a href="#05-16">Style 05-16</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -1870,7 +1896,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="05-17"></a>Put Presentation Logic in the Component Class
|
||||
### <a id="05-17"></a>Put presentation logic in the component class
|
||||
#### <a href="#05-17">Style 05-17</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -1901,7 +1927,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="06-01"></a>Use Directives to Enhance an Existing Element
|
||||
### <a id="06-01"></a>Use directives to enhance an element
|
||||
#### <a href="#06-01">Style 06-01</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -1926,7 +1952,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="06-03"></a>Use HostListener and HostBinding Class Decorators
|
||||
### <a id="06-03"></a>_HostListener_/_HostBinding_ decorators versus _host_ metadata
|
||||
#### <a href="#06-03">Style 06-03</a>
|
||||
|
||||
.s-rule.consider
|
||||
|
|
@ -1962,7 +1988,7 @@ a(href="#toc") Back to top
|
|||
:marked
|
||||
## Services
|
||||
|
||||
### <a id="07-01"></a>Services are Singletons within an Injector
|
||||
### <a id="07-01"></a>Services are singletons
|
||||
#### <a href="#07-01">Style 07-01</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -1984,7 +2010,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="07-02"></a>Single Responsibility
|
||||
### <a id="07-02"></a>Single responsibility
|
||||
#### <a href="#07-02">Style 07-02</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -2007,7 +2033,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="07-03"></a>Providing a Service
|
||||
### <a id="07-03"></a>Providing a service
|
||||
#### <a href="#07-03">Style 07-03</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -2043,7 +2069,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="07-04"></a>Use the @Injectable() Class Decorator
|
||||
### <a id="07-04"></a>Use the @Injectable() class decorator
|
||||
#### <a href="#07-04">Style 07-04</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -2071,7 +2097,7 @@ a(href="#toc") Back to top
|
|||
:marked
|
||||
## Data Services
|
||||
|
||||
### <a id="08-01"></a>Separate Data Calls
|
||||
### <a id="08-01"></a>Talk to the server through a service
|
||||
#### <a href="#08-01">Style 08-01</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -2104,15 +2130,15 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
## Lifecycle Hooks
|
||||
## Lifecycle hooks
|
||||
|
||||
Use Lifecycle Hooks to tap into important events exposed by Angular.
|
||||
Use Lifecycle hooks to tap into important events exposed by Angular.
|
||||
|
||||
a(href="#toc") Back to top
|
||||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="09-01"></a>Implement Lifecycle Hooks Interfaces
|
||||
### <a id="09-01"></a>Implement lifecycle hook interfaces
|
||||
#### <a href="#09-01">Style 09-01</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
@ -2157,7 +2183,7 @@ a(href="#toc") Back to top
|
|||
|
||||
.l-main-section
|
||||
:marked
|
||||
### <a id="A-02"></a>File Templates and Snippets
|
||||
### <a id="A-02"></a>File templates and snippets
|
||||
#### <a href="#A-02">Style A-02</a>
|
||||
|
||||
.s-rule.do
|
||||
|
|
|
|||
Loading…
Reference in New Issue