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