# get和set  ```javascript let person1 = { _time: 'today', _age: 16, // _time只读 get time() { return this._time; }, // set time(val){ // this._time = val // }, get age() { return this._age }, set age(val) { this._age = val; } } console.log(person1._time + ' and ' + person1.age); // today and 16 person1.time = '不快乐'; person1._age = 18; // _time是可读属性，无法修改成功 console.log(person1.time + ' and ' + person1.age); // today and 18 console.log(person1._time + ' and ' + person1._age); // today and 18 ```