Technical Solution
[CiviCRM] How to use JQuery in CiviCRM?
In one of form that I created it need some client side dynamic behavior. I did that in a javascript and used JQuery. But it did not worked. I thought that JQuery did not work in CiviCRM.
Actually CiviCRM supports JQuery. But your code should be inside cj(function ( $ ) or CRM.$ section.
See the example.
cj(function ( $ ) {
$(document).ready(function(){
....
}});
Now my code started working.
We can use CRM.$ also.
CRM.$(function($) {
// Your code here
});
For more details please refer: http://wiki.civicrm.org/confluence/display/CRMDOC/Javascript+Reference