JavaScript对象复制拷贝

拷贝方法：

function clone(myObj) {
                if (typeof (myObj) != \'object\') return myObj;
                if (myObj == null) return myObj;

                var myNewObj = new Object();

                for (var i in myObj)
                    myNewObj[i] = clone(myObj[i]);

                return myNewObj;
            }

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调用：

var _data = {};
                        _data.currentItem = clone(item);

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