es6一行代码搞定数组去重

运用知识点： …扩展运算符（扩展运算符用三个点号表示，功能是把数组或类数组对象展开成一系列用逗号隔开的值）以及Set key不能重复的特性web var shuzu =["red","blue","red","green","blue"]; var quchonghou = [...new Set(shuzu)]; console.log(quchonghou,Array.isArray(quc

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