javascript this Ó÷¨

Ô­ÎĵØÖ·£ºhttp://www.cnblogs.com/daniel-shen/archive/2006/07/12/449280.html
javascript ÖÐthis µÄÓ÷¨:
1.<div onclick="// ¿ÉÒÔÔÚÀïÃæʹÓÃthis">division element</div> this Ö¸Ïòdiv
2.    <div id="elmtDiv">division element</div>
       <script language="javascript">
        var div = document.getElementById('elmtDiv');
        div.attachEvent('onclick', EventHandler);  //attachEvent°ÑdivµÄonclickʼþºÍÒ»¸ö·½·¨°ó¶¨
         function EventHandler()
         {
         // ÔÚ´ËʹÓÃthis
          }
        </script>ÔÚ´Ëthis Ö¸Ïòwindow¶ÔÏó,ÈôÒªÒýÓÃdiv¶ÔÏóthis.event.srcElement;
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<div id="elmtDiv">division element</div>
 <script language="javascript">
 var div = document.getElementById('elmtDiv');
 div.onclick = function()
 {
    // ÔÚ´ËʹÓÃthis
 };
 </script>²úÉúµÄ·½·¨Í¬ÉÏ,µ«´Ë´¦µÄthis Ö¸Ïòdiv
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function JSClass()
  {
      var myName = 'jsclass';
      this.m_Name = 'JSClass';
  }
  JSClass.prototype.ToString = function()
  {
      alert(myName + ', ' + this.m_Name);
  };
  var jc = new JSClass();
  jc.ToString();//ÕâÊÇJavaScriptÄ£ÄâÀඨÒåÖжÔthisµÄʹÓã¬Õâ¸öºÍÆäËüµÄOOÓïÑÔÖеÄÇé¿ö·Ç³£µÄÏàʶ¡£µ«ÊÇÕâÀïÒªÇó³ÉÔ±ÊôÐԺͷ½·¨±ØÐëʹÓÃthis¹Ø¼ü×ÖÀ´ÒýÓã¬ÔËÐÐÉÏÃæµÄ³ÌÐò»á±»¸æÖªmyName䶨Òå¡£
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Function.prototype.GetName = function()
  {
      var fnName = this.toString();