错误rxjs_Observable __.Observable.forkJoin不是函数吗? [英] Error rxjs_Observable__.Observable.forkJoin is not a function?

问题描述

我正在angualr-cli应用程序中使用Rxjs.

I am using Rxjs in an angualr-cli application.

in viewer.component.ts

in viewer.component.ts

    //Other Imports
    import { Observable } from 'rxjs/Observable';
    //omitting for brevity
   export class ViewerComponent implements OnInit, AfterViewInit, OnDestroy {
    someFunction(someArg){
    //omitting for brevity
    let someArray: any = [];
    //Add some info
    Observable.forkJoin(someArray).subscribe(data => {
              //Do something with data
            });
    }
    //omitting for brevity
    }  

我理解为

ERROR TypeError: __WEBPACK_IMPORTED_MODULE_2_rxjs_Observable__.Observable.forkJoin is not a function
    at ViewerComponent.webpackJsonp../src/app/component/viewer.component.ts.ViewerComponent.someFunction(http://localhost:4200/main.bundle.js:4022:73)
    at http://localhost:4200/main.bundle.js:3951:31

但是，如果我完全导入Rxjs(import 'rxjs';)，一切正常.没错 我似乎仍了解需要补充的内容. 我也尝试导入rxjs/Observable/forkjoin，但无济于事.

But if I Import Rxjs completely (import 'rxjs';) everything works. No error. I cont seem to understand whats additional that needed. I also tries importing rxjs/Observable/forkjoin but nothing to avail.

有关如何执行此操作的任何指示.

Any pointers on how to go about this.

推荐答案

如此处，您有两种选择:

1. 将所有运算符作为一个包导入
2. 或单独导入每个运算符

在第一种情况下，您将使用以下导入方式:

In the first case you would use import like this:

import Rx from 'rxjs/Rx';

Rx.Observable.forkJoin(1,2,3)

第二个是这样的

import { Observable } from 'rxjs/Observable';
import 'rxjs/add/observable/forkJoin';

我相信您正在寻找的是第二个选择.

I believe what you're looking for is the second option.

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