jquery-autogrow-textarea

A jQuery plugin to make textarea be resized automatically to fit its contents.

DEMO

http://jsfiddle.net/kuwabarahiroshi/7CsFR/

Why I wrote this plugin

A precedent plugin on this feature is found here:
http://www.technoreply.com/autogrow-textarea-plugin-version-2-0/

However, the plugin is not so good at multibyte character.
I, as a Japanese, thought it could be enhanced with using .scrollHeight to detect textarea height.

Misc

• IE6-8 has a bug on .scrollHeight as described here:
  http://www.atalasoft.com/cs/blogs/davidcilley/files/IETextAreaBug.html
  This plugin copes well with this bug.

• Padding height of a textarea is included in .scrollHeight on IE, Webkit, Opera, but excluded on FireFox.
  This plugin is perfectly cross-browser compatible.

Tested

• Win XP: IE8
• Win Vista: IE9, Opera, Firefox
• Mac OSX: Chrome, Firefox, Safari
• iOS: mobile safari