HTML DOM contentDocument Property
 Complete IFrame Object Reference
Definition and Usage
The contentDocument property returns the iframe's document as an HTML object.
The returned object can be processed with all standard DOM methods.
Syntax
iframeObject.contentDocument
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Example
The following example extracts
the text from the first <h3> element in the document loaded in the iframe:
<html>
<head>
<script type="text/javascript">
function getTextNode()
{
var x=document.getElementById("frame1").contentDocument;
alert(x.getElementsByTagName("h3")[0].childNodes[0].nodeValue);
}
</script>
</head>
<body>
<iframe src="frame_a.htm" id="frame1"></iframe>
<br /><br />
<input type="button" onclick="getTextNode()" value="Get text" />
</body>
</html>
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Try-It-Yourself Demos
Extract a text node from an iframe document
Complete IFrame Object Reference
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