I know some people love it, some people hate its overuse, and others really don't care....

What do you think?

And, should programmers be concerned about the small percentage of people who may not have javascript enabled?

I personally love AJAX. I don't necessarily use it everywhere, though it is so convenient, in my opinion. It makes web pages so much faster and more fluid when used properly.

I am just wondering though, because I'm planning on using it in several places in a project. For instance, ajax-based pagination, just for one example. Now with the links, I still do have it fall back to the link actually clicking if javascript is disabled. However, I also use AJAX at times with forms; instead of a regular submit, the submit button sends the data via javascript/AJAX. It works quite well.

I just don't want to discard its use just because a small percentage of people have javascript disabled. I think that if used properly, javascript can make the web a lot more interactive.

you have to be careful with using ajax.

What if you have 1000 links in your pagination, and a user wants to book mark something found on link (page) 567th? Can he open up your page and go directly to page 567? or he must go to some page and browse through the link again :) . I don't use ajax on pagination links of my applications.

Ajax is good and bad depending on its uses.

I think the percent of people without JS is higher than it looks. Anyone with it disabled, a legacy browser, WAP browser, or like orbitz said, anyone who would like to bookmark / link to a page, would be SOL.

What you could do is make AJAX an option for logged in users.