- From: Jan-Ivar Bruaroey via GitHub <sysbot+gh@w3.org>
- Date: Fri, 12 Jul 2019 17:32:14 +0000
- To: public-webrtc-logs@w3.org
To illustrate the difference between a (main thread) task and an operetion:
This click triggers one task (one synchronous operation):
```js
button.onclick = () => {
video1.pause();
video2.pause();
video3.pause();
}
```
This click triggers 3 tasks (one asynchronous operation):
```js
button.onclick = async () => {
await video1.play();
await video2.play();
await video3.play();
}
```
...because it is syntactic sugar for:
```js
button.onclick = () => {
return video1.play() // synchronously invoked
.then(() => video2.play()) // a callback
.then(() => video3.play()); // another callback
}
```
(A fourth task may resolve the final returned promise, but it might be GC'ed since it's unused).
--
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Received on Friday, 12 July 2019 17:32:17 UTC