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cols property (textarea)

Browser support:

Specifies or returns the width of a textarea, in characters.

The width is determined by the average character width. You can set the dimensions of the textarea with the width and the height style properties.

Syntax:

object.cols;

You can find the related objects in the Supported by objects section below.

This property is read/write.

HTML page for this property: cols

Possible values:

Integer that sets or retrieves the width in characters.

Default: 20.

Example HTML code 1:

This example illustrates the use of the cols attribute:

<textarea cols="40">
    The cols attribute of the textarea element sets the width of the object.
</textarea>

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Example HTML code 2:

This example illustrates the use of the cols property:

<head>
    <script type="text/javascript">
        function ChangeCols () {
            var textarea = document.getElementById ("myText");
            var input = document.getElementById ("myInput");
            textarea.cols = input.value;
        }
    </script>
</head>
<body>
    <textarea id="myText" cols="40">
        The cols attribute of the textarea element sets the width of the object.
    </textarea>

    <br />
    <input type="text" id="myInput" value="20" />
    <button onclick="ChangeCols ();">Change cols attribute!</button>
</body>