一，Object.assign() 方法

const oldObj = {name: "coderkey",age: 18,hobbies: ["eat", "sleep", "game"],};//将拷贝对象与{}空对象合并const newObj = Object.assign({}, oldObj );console.log(newObj );oldObj.name = pinkconsole.log(oldObj,newObj)console.log(oldObj===newOb)

二，ES6展开运算符…

const oldObj = {name: "coderkey",age: 18,hobbies: ["eat", "sleep", "game"],};const newObj= { ...oldObj };console.log(newObj);oldObj.name = pinkconsole.log(oldObj,newObj)console.log(oldObj===newOb)

三，数组合并方法 concat()

const oldArr = [ 1,2,3,{name:'coderkey',age:18}]
const newArr = oldArr.concat()

四，数组剪裁方法 slice()

const oldArr = [ 1,2,3,{name:'coderkey',age:18}]
const newArr = oldArr.slice()

五，注意：

浅拷贝拷贝的是引用，它们共享同一块内存，当引用的值改变时，另外一个也会跟着改变;