Ext JS is a cross-browser JavaScript library for building Rich Internet Applications, with a powerful effects library and GUI toolkit. Here’s a cool tutorial from sixrevisions on how to use it for elastic textareas, which are elements that automatically get bigger or smaller based on the amount of text input by the user. (You’ve seen elastic textareas on Facebook, for example) This really is a bit of functionality that you’ll want to bookmark or save in some other way; in my opinion this feature is an elegant little addition to text fields on a webpage that is so unobtrusive that you almost don’t notice it.
Elastic Textareas
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