The AJAX examples fall a little flat. Yes, .ajax is a wrapper, and it was written because the API for XMLHTTPRequest is needlessly complicated and verbose.
If you're developing a single page application, you only load jquery once, then do the rest with AJAX calls for JSON and assets. It's worth the <100 KB on initial page load, at least for the projects I've worked on.
If you're developing a single page application, you only load jquery once, then do the rest with AJAX calls for JSON and assets. It's worth the <100 KB on initial page load, at least for the projects I've worked on.