1,对象属性删除
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function fun(){
this.name = 'mm';
}
var obj = new fun();
console.log(obj.name);//mm
delete obj.name;
console.log(obj.name); //undefined
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2,变量删除
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var
name =
'lily'
;
delete
name;
console.log(name);
//lily
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直接用delelte删除不了变量
3,删除不了原型链中的变量
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fun.prototype.age = 18;
delete
obj.age;
console.log(obj.age)
//18
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转自: http://www.jb51.net/article/54247.htm
参考:http://www.jb51.net/article/20428.htm (JavaScript 三种创建对象的方法)