Using Libraries

My ideas of using JQuery

I have 3 files that help to add the items to the shopping cart. I will use JQuery to write a single file that deals with all items and the items added depend on the page the user is in, As each item is shown on a different page.

My second use of JQuery would be for the main navigation menu. I have 2 classes used for those links, black and currentpagemenu, in the last units I have been giving the links class names in the HTML file. Now, I want to remove the class attribute from the HTML file and let JQuery assign the classes to those links depending on the current page the user is on.

Finally, the third use of JQuery will be rewriting the file "/javascript/jquery/mycart/mycartjquery.js" with JQuery. I want to do this for two reasons. First, with Jquery the code will be shorter and easy to maintain. Second, I need to practice writing JQuery and to do this I need a file that already exists so that I can compare the functionality of the JQuery file.