Configure jQuery to be Compatible with Other Libraries

We all find ourselves in situations where multiple libraries are needed, and because jQuery isn’t the only library that uses the $ alias, compatiblity issues sometimes pop up. Thankfully, this is easy to fix using jQuery’s noConflict(). You can even define a custom alias to replace the $:

var $j = jQuery.noConflict(); 

//Now you can use '$j' just like '$' 

$j("div").hide();

An alternate technique is to wrap jQuery calls in an anonymous function and pass jQuery in as a parameter. Then you can use whatever alias you want, including the ‘$’. This is especially useful for plugin authoring

(function($){ 

        $(document).ready(function(){ 

             //You can use normal jQuery syntax here 

        }); 

})(jQuery);