AJAX update MySQL query based on <option> values

Hey. So I am looking for a way to pass an option value through my mySQL query, dynamically. The goal is to simply update the LIMIT value, or the Posts per page in my case. An example of some code wo开发者_Go百科uld be great, or even just a link to point me in the right direction. I have looked through a few AJAX tutorial, but I am looking for something more specific to my case. Thanks!

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i would recommend looking into and using JQuery

http://viralpatel.net/blogs/2009/04/jquery-ajax-tutorial-example-ajax-jquery-development.html