mirror of
https://github.com/qianguyihao/Web.git
synced 2024-11-01 13:34:46 +08:00
20 lines
265 B
JavaScript
20 lines
265 B
JavaScript
|
## Promise 的执行顺序
|
|||
|
|
|
|||
|
|
题目 1：
|
|||
|
|
|
|||
|
|
```js
|
|||
|
|
const p = new Promise((resolve, reject) => {
|
|||
|
|
console.log(1);
|
|||
|
|
});
|
|||
|
|
|
|||
|
|
console.log(2);
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
打印结果：
|
|||
|
|
|
|||
|
|
```
|
|||
|
|
1
|
|||
|
|
2
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
我们需要注意的是：Promise里的代码整体，其实是同步任务，会立即执行。
|