AJAX Tutorials

The History of AJAX

  • 2007-09-04
  • Comments
  • Emiley J
  • 1638

In the beginning, there was the World Wide Web. Compared with desktop applications, web applications were slow and clunky. People liked web applications anyway because they were conveniently available from anywhere, on any computer that had a browser. Then Microsoft created XMLHttpRequest in Internet Explorer 5, which let browser-side JavaScript communicate with the web server in the background without requiring the browser to display a new web page. That made it possible to develop more fluid and responsive web applications. Mozilla soon implemented XMLHttpRequest in its browsers, as did Apple (in the Safari browser) and Opera.
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To use or not to use AJAX

  • 2007-09-04
  • Comments
  • Emiley J
  • 1637

When you use Ajax techniques to update portions of a web page, the user gains responsiveness and fluidity. However, the user also loses the ability to bookmark and to use the browser's back button. Both of these drawbacks stem from the same fact: the URL does not change because the browser has not loaded a new page.
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How to Make an HTTP Request in AJAX

  • 2010-11-28
  • Comments
  • Ram Baskar
  • 1637

In order to make an HTTP request to the server using JavaScript, you need an instance of a class that provides you this functionality. Such a class was originally introduced in Internet Explorer as an ActiveX object, called XMLHTTP. Then Mozilla, Safari and other browsers followed, implementing an XMLHttpRequest class that supports the methods and properties of Microsoft's original ActiveX object.
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Handling the Server Response in AJAX

  • 2010-11-28
  • Comments
  • Ram Baskar
  • 1637

Remember that when you send the request, you provide the name of a JavaScript function that is designed to handle the response. eg:
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A complete sample program in AJAX

  • 2010-11-28
  • Comments
  • Ram Baskar
  • 1637

Here is a complete AJAX example with a simple HTTP request. Our JavaScript will request an HTML document, test.html, which contains the text "I'm a test." and then we'll alert() the contents of thetest.html file.
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XML vs JSON in AJAX

  • 2009-01-17
  • Comments
  • Emiley J.
  • 1638

If you are working with AJAX, you probably use either one of them or both of them. However there are pros and cons of using each of them. One major drawback of using XML is the speed. XML requires two tags for every data point. These additional data in transmission between the server and the client slows down the data exchange and wastes bandwidth.
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Related Tutorials

How to Make an HTTP Request in AJAX

Handling the Server Response in AJAX

A complete sample program in AJAX

XML vs JSON in AJAX

Creating JSON objects using Java in AJAX

The History of AJAX

To use or not to use AJAX

Archived Comments

1. Hi,
really nice article. but still have on

View Tutorial          By: Yogesh Rishipathak at 2009-06-04 02:25:06

2. You should check out the new BonCode connector for
View Tutorial          By: Petro Donic at 2012-07-16 02:34:06

3. Nice example..i m working on android and i want to
View Tutorial          By: Pranav at 2012-04-25 07:00:48

4. M finding difficulty in understanding Java. Can an
View Tutorial          By: Sunil at 2010-09-28 03:54:57

5. i have run the code successfully but it does not s
View Tutorial          By: amrish at 2010-12-11 07:00:28

6. Except for when you're programming low level hardw
View Tutorial          By: Jonathan H at 2012-05-10 08:46:48

7. good code
View Tutorial          By: neha at 2011-07-02 01:46:52

8. hay is there any way to perform operation or calcu
View Tutorial          By: neha at 2009-11-20 08:29:45

9. This tutorial is really good for beginners.It help
View Tutorial          By: Prabhat Kumar at 2007-04-09 05:02:02

10. vinod kumar for j2me app development we need one I
View Tutorial          By: saurabh dixit at 2013-04-18 09:59:23