How about AJAX and jQuery?
For AJAX features, jQuery presents a range of techniques.
Users can use the jQuery AJAX methods to request text, HTML, XML, or JSON from a remote server via HTTP Get and HTTP Post - and then pack the the outside raw data into the chosen HTML elements of ones website page!
AJAX coding can be difficult without jQuery!
Regular AJAX code can be difficult to write because different browsers have various AJAX implementation syntax. This means you'll need to write additional software to verify for different browsers. Even so, the jQuery team has taken care of this for us, letting everyone to generate AJAX functionality with just one line of code.