js 實現深複製/深複製

//深複製
const deepClone = (obj) => {
    var target = {};
    for (var key in obj) {
        if (Object.prototype.hasOwnProperty.call(obj, key)) {
            if (typeof obj[key] === 'object') {
                target[key] = deepClone(obj[key]);
            } else {
                target[key] = obj[key];
            }
        }
    }
    return target;
}