Small workaround to use simple jQuery “$” quotation with your custom JS
Our built-in jQuery is loaded by default, so it’s not possible to use a simple jQuery “$” quotation in version 7 with your custom JS. Instead you need to use the noConflict() mode.
There is a small and simple workaround, which in most cases should work perfectly. All you need to do is to reset "$" after Kentico has unset it. To do this, you need to add the following to the top of the master page layout (top of the <body> section – this is because Kentico’s libraries are overriding this behavior in the <head> section)
var $ = jQuery.noConflict();
See also: How to register and use the native Kentico jQuery library
Kentico version 7.x