AJAX Tutorials

The History of AJAX

  • 2007-09-04
  • Comments
  • Emiley J
  • 338

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
  • 336

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
  • 336

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
  • 336

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
  • 336

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.
  • 336

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. Please send the complete code.. thanks!
View Tutorial          By: Roger22 at 2010-03-11 00:41:07

2. Yes, as @ Mansi said it's really helpful.
I

View Tutorial          By: Eko SW at 2011-06-22 23:38:22

3. 29. It is not a deadlock. What will actually happe
View Tutorial          By: Sasha at 2012-01-24 14:34:03

4. your code error

because i try to ru

View Tutorial          By: Nasser at 2013-01-09 10:33:34

5. The sample code was all I needed to figure out how
View Tutorial          By: David at 2011-08-28 07:34:28

6. Excellent. I want you to publish about memory allo
View Tutorial          By: Mohamed firnaz at 2011-12-07 04:54:27

7. The code sample in this tutorial is good. It would
View Tutorial          By: Anon at 2009-06-05 03:36:59

8. Well, this fix worked form me using Apache 2.2.11,
View Tutorial          By: Bruce at 2009-07-21 15:03:02

9. Can u tell it can also use for connecting to oracl
View Tutorial          By: Ankur Jain at 2010-08-06 05:31:08

10. The example shown and ur way of explaining is good
View Tutorial          By: Devi at 2009-02-24 07:19:26