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I have a textarea with the default number of columns, like 10 or 15 or something. I want the text area to shrinkwrap the text inside on blur. Does anyone know how to do this?

So far I have

$('textarea').live('blur', function() {
    var textAreaWidth = $(this).val().length;
    $(this).attr('cols', 'textAreaWidth');

});

But this is ugly for obvious reasons. I just have no clue how to do this.

Any Ideas?

I have a textarea with the default number of columns, like 10 or 15 or something. I want the text area to shrinkwrap the text inside on blur. Does anyone know how to do this?

So far I have

$('textarea').live('blur', function() {
    var textAreaWidth = $(this).val().length;
    $(this).attr('cols', 'textAreaWidth');

});

But this is ugly for obvious reasons. I just have no clue how to do this.

Any Ideas?

• javascript
• jquery
• html
• css

Share Improve this question Follow asked Apr 12, 2012 at 6:01 mharris7190mharris7190 1,37433 gold badges2121 silver badges3636 bronze badges

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3 Answers 3

Sorted by: Reset to default 2

if you want to only decrease the size you should check that if the value is less than, say 20 and then decrease the number of columns. try this:

<textarea rows="2" cols="20"></textarea>

$('textarea').on('blur', function() {
    var textAreaWidth = $(this).val().length;

    if (textAreaWidth < 20) {
       $(this).attr('cols', textAreaWidth);
    }
    $('textarea').on('keypress', function() {
       $(this).attr('cols', '20');
    });   
});

http://jsfiddle/4bccm/

Remove the single quotes from around 'textAreaWidth' in

$(this).attr('cols', 'textAreaWidth');

This is a variable and doesn't need quotes around it.

$('textarea').bind('blur keyup', function() {
    $(this).attr('cols', $(this).val().length);
});​

This makes it shrink or grow as you type/blur.

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