js对象的set/get方法案例

代码 :

var obj = {name:'jzx',        _age:18,   //属性前加_建议不要直接访问        get age(){            return this._age;        },        set age(val){            this._age = val;        }    };console.log(obj._age);  //18console.log(obj.age);   //18obj.age = 20;  //赋值console.log(obj.age);  //20