es6 扩展运算符应用

扩展运算符应用

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>扩展运算符应用</title>

</head>
<body>
<div id="ad">

</div>
<div></div>
<script>

    //数组合并
    const arr = ['a','b','c'];
    const arr2 = ['d','e','f'];

    //const arr3 = arr.concat(arr2);
    //console.log(arr3);
    const arr3 = [...arr, ...arr2];
    console.log(arr3);

    //克隆数组
    const arr4 = [...arr];
    console.log(arr4);

    //伪数组转数组
    const divs = document.querySelectorAll('div');
    console.log(divs);
    const divArr = [...divs];
    console.log(divArr);

</script>
</body>
</html>
posted @ 2021-06-21 11:42  胡勇健  阅读(38)  评论(0)    收藏  举报