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javascript 方法覆写实例代码

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> 
<HTML> 
<HEAD> 
<TITLE> New Document </TITLE> 
<META NAME="Generator" CONTENT="EditPlus"> 
<META NAME="Author" CONTENT=""> 
<META NAME="Keywords" CONTENT=""> 
<META NAME="Description" CONTENT=""> 
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<BODY> 
<input type="button" value ="test1" onclick ="__doPostBack('1','1');"/> 
<img src="/_New/_cj/myeditor/sysimage/space.gif" class="ewebeditor__script" _ewebeditor_fake_tag="script" _ewebeditor_fake_value="%3CSCRIPT%20LANGUAGE%3D%22JavaScript%22%3E%20%0D%0A%3C!--%20%0D%0Afunction%20__doPostBack(eventTarget%2C%20eventArgument)%20%0D%0A%7B%20%0D%0Aalert('2')%3B%20%0D%0A%7D%20%0D%0A%2F%2F--%3E%20%0D%0A%3C%2FSCRIPT%3E"> 
<img src="/_New/_cj/myeditor/sysimage/space.gif" class="ewebeditor__script" _ewebeditor_fake_tag="script" _ewebeditor_fake_value="%3CSCRIPT%20LANGUAGE%3D%22JavaScript%22%3E%20%0D%0A%3C!--%20%0D%0Afunction%20__doPostBack(eventTarget%2C%20eventArgument)%20%0D%0A%7B%20%0D%0Aalert('1')%3B%20%0D%0A%7D%20%0D%0A%2F%2F--%3E%20%0D%0A%3C%2FSCRIPT%3E"> 
<input type="button" value ="test2" onclick ="__doPostBack('1','1');"/> 
</BODY> 
</HTML>

　　 [Ctrl+A 全选注:如需引入外部Js需刷新才能执行]

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