1）普通函数实现

function cloneObject(obj) {            if (obj === null || typeof obj !== 'object') {                return obj;            }            var temp = obj.constructor(); // give temp the original obj's constructor            for (var key in obj) {                temp[key] = cloneObject(obj[key]);            }            return temp;}        var bob = {            name: "Bob",            age: 32        };        var bill = cloneObject(bob);        bill.name = "Bill";        console.log(bob);        console.log(bill);

2)通过json方法实现

var bob = {    name: "Bob",    age: 32}; var bill = (JSON.parse(JSON.stringify(bob)));bill.name = "Bill"; console.log(bob);console.log(bill);

3）jquery中的$.extend

var bob = {    name: "Bob",    age: 32}; var bill = $.extend(true, {}, bob);bill.name = "Bill"; console.log(bob);console.log(bill);