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V2EX  ›  问与答

警告框里弹出的是什么？

  •   
  •   darasion · Mar 6, 2011 · 4693 views
    This topic created in 5606 days ago, the information mentioned may be changed or developed.
    <script>
    var obj={};
    obj.a=function(){
    (function(){
    alert(this);
    })();
    }
    obj.a();
    </script>
  • Obj
  • script
  • function
    4 replies  •  1970-01-01 08:00:00 +08:00
    Yeasiz
        1
    Yeasiz  
       Mar 6, 2011
    this ?
    chone
        2
    chone  
       Mar 6, 2011
    window.document
    chone
        3
    chone  
       Mar 6, 2011
    @chone 不对说错了，我的意思是指window这个对象
    apoclast
        4
    apoclast  
       Mar 8, 2011
    还要看在哪个闭包里跑吧
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