ES6-ES11 扩展运算符的应用

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>扩展运算符应用</title>
</head>
<body>
    <div></div>
    <div></div>
    <div></div>
    <script>
        //1. 数组的合并 情圣  误杀  唐探
        // const kuaizi = ['王太利','肖央'];
        // const fenghuang = ['曾毅','玲花'];
        // // const zuixuanxiaopingguo = kuaizi.concat(fenghuang);
        // const zuixuanxiaopingguo = [...kuaizi, ...fenghuang];
        // console.log(zuixuanxiaopingguo);

        //2. 数组的克隆， 有引用数据类型的话就是浅拷贝
        // const sanzhihua = ['E','G','M'];
        // const sanyecao = [...sanzhihua];//  ['E','G','M']
        // console.log(sanyecao);

        //3. 将伪数组转为真正的数组
        const divs = document.querySelectorAll('div');
        const divArr = [...divs];
        console.log(divArr);// arguments
    </script>
</body>
</html>
posted on 2023-02-26 21:57 垂序葎草阅读(8) 评论(0) 编辑收藏举报