Ajax Tutorial - Tutorial Tour

Ajax Tutorial

Ajax Tutorial
Ajax Tutorial

Ajax Tutorial – AJAX is an acronym for Asynchronous JavaScript and XML. It is a group of inter-related technologies like JavaScript, DOM, XML, HTML, CSS etc. If you know JavaScript, HTML, CSS, and XML, then you learn AJAX easily.

Ajax is not a technology, but a group of technologies. HTML and CSS can be used in combination to mark up and style information. The DOM is accessed with JavaScript to dynamically display – and allow the user to interact with – the information presented. JavaScript and the XMLHttpRequest object provide a method for exchanging data asynchronously between browser and server to avoid full page reloads.

AJAX is based on the following open standards:

  1. Browser-based presentation using HTML and Cascading Style Sheets (CSS).
  2. Data is stored in XML format and fetched from the server.
  3. Behind-the-scenes data fetches using XMLHttpRequest objects in the browser.
  4. JavaScript to make everything happen.

AJAX is vary useful for developers because they can –

  1. Update a web page without reloading the page
  2. Request data from a server – after the page has loaded
  3. Receive data from a server – after the page has loaded
  4. Send data to a server – in the background.

AJAX is the most viable Rich Internet Application (RIA) technology so far. It is getting tremendous industry momentum and several tool kit and frameworks are emerging. But at the same time, AJAX has browser incompatibility and it is supported by JavaScript, which is hard to maintain and debug.

Ajax Tutorial


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