I am using dnn 6. It has file dotnetnuke/js/dnn.jquery.js so I created a module and added reference to this jquery file and all others JCrop files and it doesn't work.
So I added official JQuery.js but then dnn can't find some methods.
Is there anybody who has used JCrop with DotNetNuke?
To reference jQuery from DotNetNuke, call DotNetNuke.Framework.jQuery.RequestRegistration(). This will use the shared jQuery reference (so that jQuery is on the page exactly once, in the <head/>, regardless of how many extensions ask for it).
If you're using jQuery 6.1, you should use the Client Resource Management API to request other scripts, with something like this:
<%@ Register TagPrefix="dnn" Namespace="DotNetNuke.Web.Client.ClientResourceManagement" Assembly="DotNetNuke.Web.Client" %>
<dnn:DnnJsInclude runat="server" FilePath="~/DesktopModules/MyModule/js/jquery.jcrop.js" />