怎么将对象里面部分的属性放到一个空的对象里面去

  var obj={name:'jack',age:18,sex:'male'}var {name,age}=objvar obj2={name,age}console.log(obj2) //{name: "jack", age: 18}

这是es6的用法

还有其他的3种方法,关于对象复制的
es6

 var obj = {name: 'jack',age: 18}var data =  Object.assign(obj)console.log(data) //{name: 'jack',age: 18}data.name = '花花'console.log(data)//{name: "花花", age: 18}console.log(obj)//{name: "花花", age: 18}

for in

 var obj = {  name: 'jack',age: 18}var params = {}for(var key in obj){params[key] = obj[key]}console.log(params, 22)/

或者

  var obj = {  name: 'jack',age: 18,hobby: {school: 'listen video',home: 'watch TV'}}var params = {}params =JSON.parse(JSON.stringify(obj))