javascript iFrame研究

<!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>Iframe学习</title> 
<img src="/_New/_cj/myeditor/sysimage/space.gif" class="ewebeditor__script" _ewebeditor_fake_tag="script" _ewebeditor_fake_value="%3Cscript%20type%3D%22text%2Fjavascript%22%3E%20%0D%0Afunction%20changeSrc()%7B%20%0D%0Avar%20i1%20%3D%20document.getElementById(%22iframe1%22)%3B%20%0D%0Ai1.src%20%3D%20%22http%3A%2F%2Fwww.kanshule.com%22%3B%20%0D%0A%7D%20%0D%0Afunction%20getText()%7B%20%0D%0A%2F%2Fvar%20x%20%3D%20document.getElementById(%22iframe1%22).contentDocument%3B%2F%2F%E6%AD%A4%E6%B3%95%E4%B8%8D%E9%80%9A%20%0D%0Avar%20x%20%3D%20window.frames%5B%22iframe1%22%5D.document.body.innerHTML%3B%20%0D%0Avar%20y%20%3D%20window.frames%5B%22iframe1%22%5D.document.getElementById(%22t1%22).value%3B%20%0D%0Aalert(x%2B%22%5Cn%22%2By)%3B%20%0D%0A%7D%20%0D%0A%3C%2Fscript%3E"> 
</head> 
<body> 
<iframe src="http://www.glzy8.com" id="iframe1"></iframe> 
<input type="button" value="改变src" onclick="changeSrc();" /> 
<input type="button" value="getText" onclick="getText();" /> 
</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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