contentwindow & contentdocument

来源:互联网 发布:汇智通数据录入挣钱吗 编辑:程序博客网 时间:2024/05/05 23:39

contentDocument

 

Definition and Usage:

The contentDocument property returns the Document object generated by a frame or iframe element.

This property can be used in the host window to access the Document object that belongs to a frame or iframe element.

Note: Because of security reasons, the contents of a document can be accessed from another document only if the two documents are located in the same domain.

 

Syntax: 

frameObject.contentDocument or iframeObject.contentDocument

 

eg:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html>

<head>

<script type="text/javascript">

function changeStyle()

{

var x=document.getElementById("myframe");

var y=(x.contentWindow || x.contentDocument);

if (y.document)y=y.document;

y.body.style.backgroundColor="#0000ff";

}

</script>

</head>

<body>

 

<iframe id="myframe" src="demo_iframe.htm">

<p>Your browser does not support iframes.</p>

</iframe>

<br /><br />

<input type="button" onclick="changeStyle()" value="Change background color" />

</body>

</html>

  

contentWindow

 

Definition and Usage:

The contentWindow property returns the Window object generated by a frame or iframe element (through the window object, you can access the document object and then any one of the document's elements).

 

Syntax: 

frameObject.contentWindow or iframeObject.contentWindow

0 0