What is jQuery.noConflict?

   As other client side libraries like MooTools, Prototype can be used with jQuery and they also use $() as their global function and to define variables. This situation creates conflict as $() is used by jQuery and other library as their global function. To overcome from such situations, jQuery has introduced 

  jQuery.noConflict();

// Use jQuery via jQuery(...)
jQuery(document).ready(function()
{
jQuery("div").hide();
});

You can also use your own specific character in the place of $ sign in jQuery.

var $j = jQuery.noConflict();
 // Use jQuery via jQuery(...)
 $j(document).ready(function()
 {
  $j("div").hide();
  });