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Frameset cols Property

Frameset Object Reference Frameset Object

Definition and Usage

The cols property sets or returns the value of the cols attribute in a frameset.

The cols attribute specifies the size of, and the number of frames in a frameset. Each frame’s width is specified in a comma-separated list.

Syntax

framesetObject.cols=values

The cols property can have one or more of the following values:

Value Description
pixels The column size in pixels (like "100px" or just "100")
% The column size in percent of the available space (like "50%")
* The rest of the available space should be assigned this column

Browser Support

Internet Explorer Firefox Opera Google Chrome Safari

The cols property is supported in all major browsers.

Example

Create a frameset with two columns. Each column is set to 50% of the browser window:

<html>
<frameset id="main" cols="50%,50%">
  <frame src="frame_cols.htm" />
  <frame src="frame_a.htm" />
</frameset>
</html>

The source code of "frame_cols.htm" is as follows:

Example

<html>
<head>
<script type="text/javascript">
function changeCols()
  {
  parent.document.getElementById("main").cols="30%,70%"
  }
function restoreCols()
  {
  parent.document.getElementById("main").cols="50%,50%"
  }
</script>
</head>
<body>

<input type="button" onclick="changeCols()" value="Change column size" />
<input type="button" onclick="restoreCols()" value="Restore column size" />

</body>
</html>

Try it yourself »

Frameset Object Reference Frameset Object
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