angular-cn/modules/@angular/examples/common/pipes/ts/slice_pipe.ts

41 lines
1.3 KiB
TypeScript

/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {Component, NgModule} from '@angular/core';
import {BrowserModule} from '@angular/platform-browser';
import {platformBrowserDynamic} from '@angular/platform-browser-dynamic';
// #docregion SlicePipe_string
@Component({
selector: 'slice-string-pipe',
template: `<div>
<p>{{str}}[0:4]: '{{str | slice:0:4}}' - output is expected to be 'abcd'</p>
<p>{{str}}[4:0]: '{{str | slice:4:0}}' - output is expected to be ''</p>
<p>{{str}}[-4]: '{{str | slice:-4}}' - output is expected to be 'ghij'</p>
<p>{{str}}[-4:-2]: '{{str | slice:-4:-2}}' - output is expected to be 'gh'</p>
<p>{{str}}[-100]: '{{str | slice:-100}}' - output is expected to be 'abcdefghij'</p>
<p>{{str}}[100]: '{{str | slice:100}}' - output is expected to be ''</p>
</div>`
})
export class SlicePipeStringComponent {
str: string = 'abcdefghij';
}
// #enddocregion
// #docregion SlicePipe_list
@Component({
selector: 'slice-list-pipe',
template: `<ul>
<li *ngFor="let i of collection | slice:1:3">{{i}}</li>
</ul>`
})
export class SlicePipeListComponent {
collection: string[] = ['a', 'b', 'c', 'd'];
}
// #enddocregion