angular-docs-cn/packages/examples/common/pipes/ts/number_pipe.ts

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/**
* @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 {registerLocaleData} from '@angular/common';
import {Component} from '@angular/core';
// we need to import data for the french locale
import localeFr from './locale-fr';
// registering french data
registerLocaleData(localeFr);
// #docregion NumberPipe
@Component({
selector: 'number-pipe',
template: `<div>
<!--output '2.718'-->
<p>e (no formatting): {{e | number}}</p>
<!--output '002.71828'-->
<p>e (3.1-5): {{e | number:'3.1-5'}}</p>
<!--output '0,002.71828'-->
<p>e (4.5-5): {{e | number:'4.5-5'}}</p>
<!--output '0 002,71828'-->
<p>e (french): {{e | number:'4.5-5':'fr'}}</p>
<!--output '3.14'-->
<p>pi (no formatting): {{pi | number}}</p>
<!--output '003.14'-->
<p>pi (3.1-5): {{pi | number:'3.1-5'}}</p>
<!--output '003.14000'-->
<p>pi (3.5-5): {{pi | number:'3.5-5'}}</p>
<!--output '-3' / unlike '-2' by Math.round()-->
<p>-2.5 (1.0-0): {{-2.5 | number:'1.0-0'}}</p>
</div>`
})
export class NumberPipeComponent {
pi: number = 3.14;
e: number = 2.718281828459045;
}
// #enddocregion
// #docregion DeprecatedNumberPipe
@Component({
selector: 'deprecated-number-pipe',
template: `<div>
<p>e (no formatting): {{e}}</p>
<p>e (3.1-5): {{e | number:'3.1-5'}}</p>
<p>pi (no formatting): {{pi}}</p>
<p>pi (3.5-5): {{pi | number:'3.5-5'}}</p>
</div>`
})
export class DeprecatedNumberPipeComponent {
pi: number = 3.141592;
e: number = 2.718281828459045;
}
// #enddocregion