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28 lines
440 B
Markdown
28 lines
440 B
Markdown
## 这些代码的打印结果是什么？
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想要考察一个人对 Promise 的掌握程度，就让他看看这些代码的打印结果是什么。
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**例1**：resolve()多次
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```js
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const promise = new Promise((resolve, reject) => {
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resolve();
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resolve();
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});
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promise
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.then(res => {
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console.log('成功的回调');
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})
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.catch(err => {
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console.log('失败的回调');
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});
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```
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打印结果：
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```
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成功的回调
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```
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