How to increment div id value?

Question

I have got a task to set the menu as selected. For that I use dynamic id. So I want to increment it with respect to the selection

My code is

Answer 1

Just use a class name instead of an id, you will be able to reuse the code you have just added but in this way.

 var list = $(".menu");

One advice, don't do the highlighting of the item menu with javascript, do it server-side, and you can add the "activating" class directly in the HTML of the LI.