PUBLIC MARKS from pvergain with tags javascript & web2.0

AHAH or Asynchronous HTML over HTTP is a much simpler version of AJAX. Using AHAH approach in JavaScript you can display external XHTML pages inside your HTML page. The beauty of the script is that it is very simple - the underling code is just twenty lines! The difference between AJAX and AHAH is the return data fomat. AJAX will load an XML file - then the developer will have to make the code that will parse the XML, extract the data and then display the results. In AHAH the approach is much simpler - the data to be fetched is XHTML - the code just has to fetch it - as the browser is already equipped to handle HTML and will display the result with no further help from the developer. Use For example, lets say we need to create a page with tabs - each tab will put some content in the main area - but the full thing must be dynamic - linking to another page won't do. The code of the main page will be...

is great to get data from the server side to the client side. But when you need to send data to the server side the advantage of using JSON is lost. In such cases UED or URL Encoded Data is a better method. The basic concept behind this is that the most used data structures can be easily encoded into a URL. One can create variables, numerical arrays, associative arrays, multi-level arrays etc. using existing syntax. The best part is all the server side languages are capable of handling this format - so no parsing is needed. * Ajax Data Transfer Format - UED(Url Encoded Data) * UED Demo

AJAX Activity Indicators

developerWorks > Web development | Open source | XML > Real Web 2.0: Bookmarks? Tagging? Delicious!