错误:类型为typeof Observable的属性计时器不存在 [英] Error: Property timer doesn't exist on type typeof Observable

问题描述

代码在下面

import {Component} from 'angular2/core';
import {Observable} from 'rxjs/Rx';

@Component({
selector: 'my-app',
template: 'Ticks (every second) : {{ticks}}'
})
export class AppComponent {
   ticks =0;

   click(){
      let timer = Observable.timer(2000,1000);
      timer.subscribe(t=>this.ticks = t);
   }
}

但是我遇到一个错误.错误在以下行:

But i am getting an error. The error is in the following line:

let timer = Observable.timer(2000,1000);

错误的定义是类型为Obofable的属性计时器不存在" 为什么我会收到这样的错误? 你觉得呢?

The definition of error is "property timer doesn't exist on type typeof Observable" Why am I getting error like that? What do you think?

推荐答案

那是因为您尚未将timer方法修补到Observable原型中.

Thats because you havent patched the timer method into the Observable prototype.

更新:Rxjs 6.0.0

将创建方法导入为静态纯函数:

Import the creation method as a static pure function:

import { timer } from 'rxjs';
let timer$ = timer(2000,1000);

原始答案:

您有2个选择:

1)使用以下方法修补该方法:

1) Patch the method with:

import 'rxjs/add/observable/timer';

2)将操作符导入为静态纯函数:

2) Import the operator as a static pure function:

import { timer } from 'rxjs/observable/timer';
let timer$ = timer(2000,1000);

我个人会推荐第二种方法.

Personally I would recommend the 2nd approach.

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