5 Ways to Make Ajax Calls with jQuery | Nettuts+
This tutorial compares five jQuery methods for making AJAX calls—load(), $.getJSON(), $.getScript(), $.get(), and $.post()—explaining when to use each based on whether you need to inject HTML into the DOM, retrieve JSON data, load scripts, or make general GET/POST requests. It demonstrates how to inspect these calls with Firebug and shows practical examples like passing parameters via GET or POST, executing callbacks on success, and handling different response formats. The guide concludes that while these five methods cover most needs, $.ajax() should be used when you need error handling or fine-grained control over request options.