es6 利用set实现数组去重 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>set实现数组去重</title>
</head>
<body>

</body>
<script type="text/javascript">
    let set = new Set(["a",'b',"c",'c'])
    console.log(set.size)  //3
    let _arr = [...set];
    console.log(_arr)

</script>
</html>

　运行结果:

posted @ 2020-04-25 16:49  前端那点事  阅读(451)  评论(0)  编辑  收藏  举报