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JS & DOM Reference

Overview

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IFrame width Property

Frame/IFrame Object

Definition and Usage

The width property sets or returns the value of the width attribute in an iframe element.

The width attribute specifies the width of an iframe.

Syntax

iframeObject.width=value

The width property can have one of the following values:

Value	Description
pixels	The width in pixels (like "100px" or just "100")
%	The width in percent of the containing element (like "20%")

Browser Support

The width property is supported in all major browsers.

Example

Change the height and width of an iframe:

<html>
<head>
<script>
function changeSize()
{
document.getElementById("myframe").height="300";
document.getElementById("myframe").width="300";
}
</script>
</head>

<body>
<iframe id="myframe" src="/default.asp" height="200" width="200">
<p>Your browser does not support iframes.</p>
</iframe>
<br><br>

<input type="button" onclick="changeSize()" value="Change size">

</body>
</html>

Try it yourself »

Frame/IFrame Object