AJAX Introduction

AJAX stands for "Asynchronous Javascript and XML".It is Not a stand-alone language or technology.It is a technique that combines a set of known technologies in order to create faster and more user friendly web pages. It is a client side technology.

Purpose of AJAX :

  • Prevents unnecessary reloading of a page.
  • When we submit a form, although most of the page remains the same, whole page is reloaded from the server.
  • This causes very long waiting times and waste of bandwidth.
  • AJAX aims at loading only the necessary innformation, and making only the necessary changes on the current page without reloading the whole page.

AJAX uses:

  • Javascript (for altering the page)
  • XML (for information exchange)
  • ASP or JSP (server side)

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