Angular 6 每 X 秒运行一个函数 [英] Angular 6 run a function in every X seconds

问题描述

我有一个名为

opensnack(text) { ... };

使用给定的文本输入打开一个角度材料小吃店.

which is opening an angular material snackbar with the given text input.

我想做的是每 10 秒调用一次这个函数.

What I want to do is to call this function like every 10 seconds.

我该怎么做?

推荐答案

使用 interval 来自 rxjs

方法如下:

import { interval, Subscription } from 'rxjs';

subscription: Subscription;

...

//emit value in sequence every 10 second
const source = interval(10000);
const text = 'Your Text Here';
this.subscription = source.subscribe(val => this.opensnack(text));

...

ngOnDestroy() {
  this.subscription.unsubscribe();
}

或者，您可以使用 setInterval 可用作 Window 对象的方法.所以你不需要导入任何东西来使用它.

Alternatively, you can use setInterval which is available as method on the Window Object. So you don't need to import anything to use it.

intervalId = setInterval(this.opensnack(text), 10000);

...

ngOnDestroy() {
  clearInterval(this.intervalId);
}

这是一个SAMPLE STACKBLITZ 供您参考.

Here's a SAMPLE STACKBLITZ for your ref.

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