JS中delete删除对象属性

1.删除对象属性

function fun(){

 

this.name = 'mm';

 

}

 

var obj = new fun();

 

console.log(obj.name);//mm

 

delete obj.name;

 

console.log(obj.name); //undefined

 

2.不能用于删除变量

var name = 'lily';

delete name;

console.log(name); //lily