Uncaught RangeError: Maximum call stack size exceeded

[Litwak]

js代码：

    var person = {//数据属性
        year:2016,
        edition:1
    }
    Object.defineProperty(person,"year",{//访问器属性
        get:function () {
            return this.year;
        },
        set:function (newValue) {
            if(newValue > 2017){
                this.year = newValue;
                this.edition += newValue - 2017;
            }
        }
    });
    person.year = 2019;
    console.log(person.edition);
    console.log(person.year);

异常：

 Uncaught RangeError: Maximum call stack size exceeded

请问为什么报这个错？

正确代码应该是这样：

    var person = {//数据属性
        //_year:2017,
        edition:1
    }
    Object.defineProperty(person,"year",{//访问器属性
        get:function () {
            return this._year;
        },
        set:function (newValue) {
            if(newValue > 2017){
                this._year = newValue;
                this.edition += newValue - 2017;
            }
        }
    });
    person.year = 2019;
    console.log(person._year);
    console.log(person.edition);//根据year设置版本号
    console.log(person.year);

[囧]

set里面又改了year的值，无限循环了