//深復制對象
var cloneObj = function (obj) {
    var newObj = {};
    if (obj instanceof Array) {
        newObj = [];
    }
    for (var key in obj) {
        var val = obj[key];
        newObj[key] = typeof val === ‘object‘ ? cloneObj(val) : val;
    }
    return newObj;
};

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