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jQuery plugin for dynamic textarea sizing
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Small jQuery plugin to allow dynamic resizing of textarea height, so that it grows as based on visitor input. To use, just call the .autosize() method on any textarea element. Example $('textarea').autosize();. See the project page for documentation and a demonstration. Released under the MIT license.


Version 1.14 - October 6, 2012

  • Added 'append' option for appending whitespace to the end of the height calculation (an extra newline improves the apperance when animating).
  • Added a demonstration of animating the height change using a CSS transition.

Version 1.13 - September 21, 2012

  • Added optional callback that fires after resize.

Version 1.12 - September 3, 2012

  • Fixed a bug I introduced in the last update.

Version 1.11 - August 8, 2012

  • Added workaround to get Chrome to reflow default text better.

Version 1.10 - July 30, 2012

  • Added 'lineHeight' to the list of styles considered for size detection.

Version 1.9 - June 19, 2012

  • Added 'textIndent' to the list of styles considered for size detection.
  • Added vender prefixes to box-sizing detection

Version 1.8 - June 7, 2012

  • Added conditional so that autosize cannot be applied twice to the same element
  • When autosize is applied to an element, it will have a data property that links it to the mirrored textarea element. This will make it easier to keep track of and remove unneeded mirror elements. Example:

    $('textarea.example').data('mirror').remove(); // delete the mirror

    $('textarea.example').remove(); // delete the original

Version 1.7 - May 3, 2012

  • Now supports box-sizing:border-box

Version 1.6 - February 11, 2012

  • added binding to allow autosize to be triggered manually. Example: $('#myTextArea').trigger('autosize');

Version 1.5 - December 7, 2011

  • fixed a regression in detecting FireFox support

Version 1.4 - November 22, 2011

  • added branching to exclude old browsers (FF3- & Safari4-)

Version 1.3 - November 13, 2011

  • fixed a regression in 1.1 relating to Opera.

Version 1.2 - November 10, 2011

  • fixed a regression in 1.1 that broke autosize for IE9.

Version 1.1 - November 10, 2011

  • autosize now follows the max-height of textareas. OverflowY will be set to scroll once the content height exceeds max-height.

Version 1.0 - November 7, 2011

  • first release
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