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A synchronous j avascript a nd x ml

Asynchronous JavaScript And XML





Ajax history

AJAX History

In 1996, the iframe tag was introduced by Internet Explorer to load or to fetch content asynchronously

In 1998, Microsoft Outlook Web App team implemented the first component XMLHTTP by client script.

In 1999, Microsoft used its iframe technology to dynamically update the news stories and stock quotes on the default page for Internet Explorer,and created the XMLHTTPActiveX control in Internet Explorer 5. Microsoft has adopted the native XMLHttpRequest model as of Internet Explorer 7.


Ajax history1
AJAX History

  • Google made a wide deployment of standards-compliant, cross browser Ajax with Gmail (2004) and Google Maps (2005).

  • The term "Ajax" was publicly stated on 18 February 2005 by Jesse James Garrett in an article titled "Ajax: A New Approach to Web Applications", based on techniques used on Google pages.

  • On 5 April 2006, the World Wide Web Consortium (W3C) released the first draft specification for the XMLHttpRequest object in an attempt to create an official Web standard.


Core components
Core Components

  • JavaScript

    JavaScript function is called when an event occurs in a page.

    Glue for the whole AJAX operation.

  • DOM

    API for accessing and manipulating structured documents.

    Represents the structure of XML and HTML documents.

  • XMLHttpRequest

    JavaScript object that performs asynchronous



Traditional vs ajax
Traditional vs AJAX



Ajax useful links
AJAX Useful Links

  • AJAX Tutorial-

  • http://www.hub4tech.com/ajax-tutorial

  • Ajax Interview Questions

  • https://www.hub4tech.com/interview/ajax