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最新推荐文章于 2025-01-05 20:27:50 发布

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最新推荐文章于 2025-01-05 20:27:50 发布

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分类专栏： Node

本文链接：https://blog.youkuaiyun.com/datuzidppd5556/article/details/100768926

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<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>

<body>
    <script>
        // 克隆
        function getType(obj) {
            // [object Array]
            let result = Object.prototype.toString.call(obj).slice(8, -1);
            return result;
        }
        // let arr = [1,2];
        // console.log(getType(arr));
        function copyClone(obj) {
            let result;//保存容器是[] 或者 {}
            let objectclass = getType(obj);//调用getType(obj)这个函数
            if (objectclass === "Object") {
                result = {};
            }
            else if (objectclass === "Array") {
                result = [];
            }
            else {
                return objectclass;
            }

            for (key in obj) {
                let value = obj[key];
                // console.log(value)//1  2   3   4   5   6 
                if (getType(value) === 'Object' || getType(value) === "Array") {
                    result[key] = copyClone(value);
                } else {
                    result[key] = obj[key];
                }
            }


            return result;
        }
        let a = [1, 2, [3, 4], 5, 6];
        let newclone = copyClone(a);
        newclone[2][0] = 10000;
        console.log(newclone, a);
        
    </script>
</body>

</html>

只会改变自己本身，不会改变原来的内容