union
最后更新于：2022-04-01 23:59:02
## union
+ [link](./union "Link to this entry.")
+ [source](https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6785 "View in source.")
+ [npm](https://www.npmjs.com/package/lodash.union "See the npm package.")
```
_.union([arrays])
```
创建顺序排列的唯一值组成的数组。所有值经过 [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero) 等值比较。
### 参数
1. [arrays] (...Array)
需要处理的数组队列
### 返回值 (Array)
返回处理好的数组
### 示例
```
_.union([2, 1], [4, 2], [1, 2]);
// => [2, 1, 4]
```
';