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JS & DOM Reference

Overview

JavaScript Objects

JS Array JS Boolean JS Date JS Math JS Number JS String JS RegExp JS Global

Browser Objects

Window Navigator Screen History Location

Core DOM Objects

DOM Node DOM NodeList DOM NamedNodeMap DOM Document DOM Element DOM Attr

HTML DOM Objects

DOM Document DOM Events DOM Elements
DOM Anchor DOM Area DOM Base DOM Body DOM Button DOM Form DOM Frame/IFrame DOM Frameset DOM Image DOM Input Button DOM Input Checkbox DOM Input File DOM Input Hidden DOM Input Password DOM Input Radio DOM Input Reset DOM Input Submit DOM Input Text DOM Link DOM Meta DOM Object DOM Option DOM Select DOM Style DOM Table DOM td / th DOM tr DOM Textarea

Textarea cols Property

Textarea Object

Definition and Usage

The cols property sets or returns the width of a text area, in characters.

Syntax

Set the cols property:

textareaObject.cols="number"

Return the cols property:

textareaObject.cols

Value	Description
number	Specifies the width of the textarea, in characters. Default is 20

Browser Support

The cols property is supported in all major browsers.

Example

Change the width of a textarea:

<html>
<head>
<script>
function displayResult()
{
var textarea=document.getElementById("myTextarea");
textarea.cols=document.getElementById("myInput").value;
}
</script>
</head>
<body>

<textarea id="myTextarea" cols="20">
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</textarea>
<br>

<p>Set cols attribute value: <input type="text" id="myInput" value="60">
<button type="button" onclick="displayResult()">Change cols attribute</button></p>

</body>
</html>

Textarea Object