Example
Change the width of a text area:
document.getElementById("myTextarea").cols = "100";
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Definition and Usage
The cols property sets or returns the value of the cols attribute of a text area.
The cols attribute specifies the visible width of a text area, in characters.
Tip: You can also use the style.width property to set the width of a text area.
Tip: Use the rows property, or the style.height property to change the height of a text area.
Browser Support
The cols property is supported in all major browsers.
Syntax
Return the cols property:
textareaObject.cols
Set the cols property:
textareaObject.cols=number
Property Values
| Value | Description |
|---|---|
| number | Specifies the width of the text area (in average character width). Default is 20 |
Technical Details
| Return Value: | A Number, representing the width of the text area, in characters |
|---|
More Examples
Example
Get the width of the text area, in characters:
var x = document.getElementById("myTextarea").cols;
The result of x will be:
50
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Example
Change the width of a text area using the style.width property:
document.getElementById("myTextarea").style.width = "500px";
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Example
Change the width and height of a text area using the cols and rows properties:
document.getElementById("myTextarea").cols = "100";
document.getElementById("myTextarea").rows = "10";
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Example
Change the width and height of a text area using the style.width and style.height properties:
document.getElementById("myTextarea").style.width = "500px";
document.getElementById("myTextarea").style.height = "100px";
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Related Pages
HTML reference: HTML <textarea> cols attribute
< Textarea Object