index.html

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    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
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<body>
    interview
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<script>

// Object.prototype.myBind = function (context, ...arg) {
//     if (typeof this !== 'function') {
//         throw TypeError('holp caller is function')
//     }

//     let obj = context || window;

//     return (...arg2) => {
//         this.call(obj, ...arg, ...arg2)
//     }
// }

// 默写一遍深度克隆

// 思路：

// 1 原始对象类
// 2 需要循环遍历的

// 只记忆下面这个

function clone(target, map = new Map()) {
    if(typeof target === 'object') {
        let cloneTarget = Array.isArray(target) ? [] : {};
        if(map.get(target)) {
            return map.get(target)
        }
        map.set(target, cloneTarget);

        for (const key in target) {
            cloneTarget[key] = clone(target[key], map)
        }
        return cloneTarget
    } else {
        return target;
    }
}

</script>
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