一道js试题

直接上试题

 <script type="text/javascript">
     var output = '123js';
     var object = {
         output : "1234",
         get : function(){
             return function(){
                 return this.output
             }
         }
     }
     console.log(object.get()())
 </script>

答案是:123js 你猜对了吗