angular-cn/modules/@angular/examples/facade/ts/async/observable.ts

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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
*/
/* tslint:disable:no-console */
// #docregion Observable
import {Observable} from 'rxjs/Observable';
import {Subscriber} from 'rxjs/Subscriber';
const obs = new Observable<number>((obs: Subscriber<number>) => {
let i = 0;
setInterval(() => { obs.next(++i); }, 1000);
});
obs.subscribe(i => console.log(`${i} seconds elapsed`));
// #enddocregion