http://benalman.com/projects/jquery-throttle-debounce-plugin/
Version: 1.1, Last updated: 3/7/2010
jQuery throttle / debounce allows you to rate-limit your functions in multiple useful ways. Passing a delay and callback to $.throttle returns a new function that will execute no more than once every delay milliseconds. Passing a delay and callback to $.debounce returns a new function that will execute only once, coalescing multiple sequential calls into a single execution at either the very beginning or end.
Visit the project page for more information and usage examples!
http://benalman.com/code/projects/jquery-throttle-debounce/docs/
These working examples, complete with fully commented code, illustrate a few ways in which this plugin can be used.
http://benalman.com/code/projects/jquery-throttle-debounce/examples/throttle/
http://benalman.com/code/projects/jquery-throttle-debounce/examples/debounce/
Information about what version or versions of jQuery this plugin has been tested with, what browsers it has been tested in, and where the unit tests reside (so you can test it yourself).
none, 1.3.2, 1.4.2
Internet Explorer 6-8, Firefox 2-3.6, Safari 3-4, Chrome, Opera 9.6-10.1.
http://benalman.com/code/projects/jquery-throttle-debounce/unit/
1.1 - (3/7/2010) Fixed a bug in jQuery.throttle where trailing callbacks executed later than they should. Reworked a fair amount of internal logic as well.
1.0 - (3/6/2010) Initial release as a stand-alone project. Migrated over from jquery-misc repo v0.4 to jquery-throttle repo v1.0, added the no_trailing throttle parameter and debounce functionality.
Copyright (c) 2010 "Cowboy" Ben Alman
Dual licensed under the MIT and GPL licenses.
http://benalman.com/about/license/