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数组中包含数组，Object，undefined，null，function等等一系列复合类型，请问javascript怎么实现去重。
走同样的路，发现不同的人生
看一下underscore的uniq()方法实现
文档:http://underscorejs.org/#uniq
代码:https://github.com/jashkenas/underscore/blob/master/underscore.js#L521
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
看一下underscore的uniq()方法实现
文档:
http://underscorejs.org/#uniq
代码:
https://github.com/jashkenas/underscore/blob/master/underscore.js#L521