Javascript Reference - HTML DOM IFrame width Property

The width attribute from <iframe> element specifies the width of an iframe.

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

Browser Support


`width`	Yes	Yes	Yes	Yes	Yes

Syntax

Return the width property.

var v = iframeObject.width

Set the width property.

iframeObject.width=pixels

Property Values

Value	Description
pixels	The width in pixels

Return Value

A String type value representing the width of the iframe in pixels

Example

The following code shows how to change the width of an iframe.


<!DOCTYPE html>
<html>
<body>
<iframe id="myFrame" src="http://example.com" height="200" width="250"></iframe>
<button onclick="myFunction()">test</button>
<script>
function myFunction() {<!--  w  w  w .  j a  v  a 2 s  .  c o m-->
    document.getElementById("myFrame").width = "400";
}
</script>
</body>
</html>

The code above is rendered as follows:

Example 2

The following code shows how to get the width of an iframe.


<!DOCTYPE html>
<html>
<body>
<iframe id="myFrame" src="http://example.com" height="200" width="250"></iframe>
<p id="demo"></p>
<button onclick="myFunction()">test</button>
<script>
function myFunction() {<!--from  w  w  w .j a v  a2 s . co m-->
    var x = document.getElementById("myFrame").width;
    document.getElementById("demo").innerHTML = x;
}
</script>
</body>
</html>

The code above is rendered as follows: