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当文本框的值发生改变时，触发事件，在IE中有效

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<title> new document </title> 
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> 
</head> 
<body> 
<div id="msg"></div> 
<input id='txt' value="" /> 
<input id='btn' value="dsa" type="button" onclick="ff()" /> 
<img src="/_New/_cj/myeditor/sysimage/space.gif" class="ewebeditor__script" _ewebeditor_fake_tag="script" _ewebeditor_fake_value="%3Cscript%3E%20%0D%0A%2F%2F%E5%BD%93%E7%8A%B6%E6%80%81%E6%94%B9%E5%8F%98%E7%9A%84%E6%97%B6%E5%80%99%E6%89%A7%E8%A1%8C%E7%9A%84%E5%87%BD%E6%95%B0%20%0D%0Afunction%20handle()%20%0D%0A%7B%20%0D%0Adocument.getElementById('msg').innerHTML%20%3D%20%22%E8%BE%93%E5%85%A5%E7%9A%84%E6%96%87%E5%AD%97%E4%B8%BA%EF%BC%9A%22%20%2B%20document.getElementById('txt').value%3B%20%0D%0A%7D%20%0D%0Aif(%2Fmsie%2Fi.test(navigator.userAgent))%20%2F%2Fie%E6%B5%8F%E8%A7%88%E5%99%A8%20%0D%0A%7B%20%0D%0Adocument.getElementById('txt').onpropertychange%20%3D%20handle%3B%20%0D%0A%7D%20%0D%0Aelse%20%0D%0A%7B%2F%2F%E9%9D%9Eie%E6%B5%8F%E8%A7%88%E5%99%A8%EF%BC%8C%E6%AF%94%E5%A6%82Firefox%20%0D%0Adocument.getElementById('txt').addEventListener(%22input%22%2C%20handle%2C%20false)%3B%20%0D%0Adocument.getElementById('txt').watch('a'%2C%20fn)%3B%20%0D%0A%7D%20%0D%0Afunction%20ff()%20%0D%0A%7B%20%0D%0Adocument.getElementById('txt').value%3DMath.random()%3B%20%0D%0A%7D%20%0D%0A%3C%2Fscript%3E"> 
</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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