flatten
最后更新于：2022-04-01 23:57:47
## flatten
+ [link](./flatten "Link to this entry.")
+ [source](https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L5931 "View in source.")
+ [npm](https://www.npmjs.com/package/lodash.flatten "See the npm package.")
```
_.flatten(array)
```
向上一级展平数组嵌套
### 参数
1. array (Array)
需要展平的数组
### 返回值 (Array)
返回展平后的新数组
### 示例
```
_.flatten([1, [2, [3, [4]], 5]]);
// => [1, 2, [3, [4]], 5]
```
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