js对象遍历和拷贝

let obj={name:'user1',age:12,gender:'man'}

for(let attr in obj){

　　console.log(attr,obj[attr])

}

const keys=Object.keys(obj)

const values=Object.values(obj)

console.log(Object.keys(obj))

console.log(Object.values(obj))

 

    let obj={name:'user1',age:12,gender:'man'}

    let obj1={}

    let obj2=Object.assign({},obj)

    obj2.name='aaa'

    console.log(obj2,obj) //{name: 'aaa', age: 12, gender: 'man'}   {name: 'user1', age: 12, gender: 'man'}