The main problem with using a jQuery script URL is that it can be difficult to remember. If you need to reference a script on multiple pages, it can be difficult to keep track of which page the script is on.
jQuery code can be found at: http://code.jquery.com/
This is a line of code that is telling the reader where they can find the jQuery code.
Why to use jQuery
There are many reasons to use jQuery in jQuery UI. First, jQuery is a well-known and widely used library that provides a lot of functionality for DOM manipulation and event handling. This makes it easy to integrate jQuery into your jQuery UI projects. Second, jQueryUI provides a lot of built-in functionality for working with the DOM and events, so you don’t have to write as much code yourself. Finally, using jQuery in your projects can make them more responsive and faster to load.
There are many jQuery alternatives available, but some of the most popular ones include: