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

22 lines
606 B
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 'rxjs/add/operator/map';
import {Observable} from 'rxjs/Observable';
import {Subscriber} from 'rxjs/Subscriber';
const obs = new Observable<number>((obs: Subscriber<any>) => {
let i = 0;
setInterval(() => obs.next(++i), 1000);
});
obs.map((i: number) => `${i} seconds elapsed`).subscribe(msg => console.log(msg));
// #enddocregion