<script type="text/javascript">
var book = {};
Object.defineProperties(book, {
_year : {
value : 2004
},
edition : {
value : 1
},
year : {
get : function () {
return this._year;
},
set : function (newValue) {
if (newValue > 2004) {
this._year = newValue + 0;
this.edition += newValue - 2004;
}
}
}
});
book.year = 2005;
alert(book.edition);
alert(book._year);
</script>
这是我的js代码,调试结果如下
麻烦各位兄弟了,小弟在此谢过