属性'forkJoin'在'typeof observable'类型上不存在-angular2 [英] property 'forkJoin' does not exist on type 'typeof observable' - angular2

问题描述

我一直在尝试使用forkJoin进行实验，主要是在这里使用公认的答案:

I was looking to experiment with a forkJoin mainly using the accepted answer here:

可观察变量的Angular2 Observable.forkJoin-ReferenceError:不是可观察的已定义

我收到上述错误消息，因为forkJoin不可用.

I'm getting the above error message as forkJoin isn't available.

有人知道为什么吗?

推荐答案

Angular 6对此做了一些修改. forkJoin已被转换为常规函数，而不是:

Angular 6 changes this up a bit. forkJoin has been converted to a regular function so, instead of:

import {Observable} from 'rxjs/Observable';
...
return Observable.forkJoin(
    this.http.get('someurl'),
    this.http.get('someotherurl'));

使用:

import {forkJoin} from 'rxjs';
...
return forkJoin(
    this.http.get('someurl'),
    this.http.get('someotherurl'));

您可以转到 https://www. metaltoad.com/blog/angular-6-upgrading-api-calls-rxjs-6 了解更多说明.

You can go to https://www.metaltoad.com/blog/angular-6-upgrading-api-calls-rxjs-6 for more explanation.

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