![References
[1.] https://www.slideshare.net
[2.] https://en.wikipedia.org/wiki/Ajax_(programming)](https://image.slidesharecdn.com/ajaxpresentation1-180404172245/85/Intoduction-to-Ajax-11-320.jpg)
Intoduction to Ajax
- 2. Reason behind the Magic Suggestion: AJAX
- 3. What is Ajax? Asynchronous JavaScript And XML A new Technology Not a Programming Language It is methodology on using several web technologies together to minimize the gap between usability and interactivity of a web application .
- 4. Development Developed in 1990’s . First Microsoft included iframe in Internet Explorer in 1996 . Another technology ‘Microsoft Remote Script’ introduced by Microsoft in 1998 . XMlHttpRequest object, an ActiveX control, was introduced by Microsoft in 1999 . Renamed as AJAX by Jesse James Garret after Google introduced its Map . Finally, in 2006 it was announced as an official web standard by W3C .
- 5. Importance of AJAX Update a web page without reloading the page Do not load entire pages Request data from a server - after the page has loaded Receive data from a server - after the page has loaded Send data to a server - in the background
- 6. Technologies HTML & CSS : For presentation DOM(Document Object Model) : To interact with data dynamically JSON or XML : For manipulation of data XMLHttpRequest : To communicate data asynchronously JavaScript : To bring these technologies together Nowadays JSON ( JavaSript Object Notation ) is used instead of XML
- 7. Life Cycle Of Web Influenced By Ajax
- 9. Advantage Of Ajax More interactive Helps to build fast, dynamic websites Allows to perform processing on client computer with JavaScipt Reduces server traffic Ajax can modify a part of a page without reloading the browser
- 10. Disadvantage of AJAX Browser should support JavaScript or XMLHttpRequest , otherwise AJAX will not work Refresh button is useless Don’t have URLs Debugging is difficult Problem with browser back button Screen readers are not able to read the AJAX properly Dynamic page updates may disrupt user interactions, particularly if the Internet connection is slow
- 12. Thank you