Javascript简单实现深拷贝

利用递归方式遍历所有属性进行深层对象拷贝：

function cloneDeep(object) {

    if (typeof (object) == 'object') {
        if (Array.isArray(object)) {
            var obj = []
        } else {
            var obj = {}
        }
        for (key in object) {
            if (typeof (object[key]) == 'object') {
                obj[key] = cloneDeep(object[key])
            } else {
                obj[key] = object[key]
            }
        }
    } else {
        var obj = object
    }
    return obj
}