What is the XMLHttpRequest object?

AJAX Questions and Answers

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What is the XMLHttpRequest object?

It offers a non-blocking way for JavaScript to communicate back to the web server to update only part of the web page.

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Other Interview Questions

• What's AJAX?
• How Ajax is Different
• Who’s Using Ajax
• Should I consider AJAX?
• Does AJAX work with Java?
• Won't my server-side framework provide me with AJAX?
• Where should I start?
• Did Adaptive Path invent Ajax? Did Google? Did Adaptive Path help build Google’s Ajax applications?
• Is it possible to set session variables from javascript?
• Cannot parse XML generated by JSP I am generating an XML using JSP, when I run the JSP in IE it shows the XML as per DOM, but when I try to parse it using Javascript , the command xmldoc.documentElement...
• What do I need to know to create my own AJAX functionality?
• Do I really need to learn JavaScript?
• Do Ajax applications always deliver a better experience than traditional web applications?
• What JavaScript libraries and frameworks are available?
• What is the difference between proxied and proxyless calls?
• Should I use XML or text, JavaScript, or HTML as a return type?
• Are there Usability Issues with AJAX?
• Can I use Ajax with Microsoft's .NET?
• Are there any frameworks available to help speedup development with AJAX?
• Is Adaptive Path selling Ajax components or trademarking the name? Where can I download it?
• Should I use an HTTP GET or POST for my AJAX calls?
• How do I debug JavaScript?
• How do I provide internationalized AJAX interactions?
• Some of the Google examples you cite don’t use XML at all. Do I have to use XML and/or XSLT in an Ajax application?
• Are Ajax applications easier to develop than traditional web applications?
• When do I use a synchronous versus a asynchronous request?
• How do I handle concurrent AJAX requests?
• What do I do on the server to interact with an AJAX client?
• Whats with the -alpha in the install instructions?
• How do I submit a form or a part of a form without a page refresh?
• How do I test my AJAX code?
• What exactly is the W3C DOM?
• When will HTML_AJAX have a stable release?
• What parts of the HTML_AJAX API are stable?
• What Browsers does HTML_AJAX work with?
• Is the server or the client in control?
• Is Ajax just another name for XMLHttpRequest?
• How do I abort the current XMLHttpRequest?
• What is the minimum version of PHP that needs to be running in order to use HTML_AJAX?
• Why does HTML_AJAX hang on some server installs
• How do I get the XMLHttpRequest object?
• Are there any security issues with AJAX?
• What about applets and plugins?
• Is AJAX code cross browser compatible?
• Techniques for asynchronous server communication have been around for years. What makes Ajax a “new” approach?
• Is Ajax a technology platform or is it an architectural style?
• How do I handle the back and forward buttons?
• How does HTML_AJAX compare with the XAJAX project at Sourceforge?
• What browsers support AJAX?
• How do I send an image using AJAX?
• Will HTML_AJAX integrate with other Javascript AJAX libraries such as scriptaculous? How would this integration look like?
• When should I use an Java applet instead of AJAX?
• What kinds of applications is Ajax best suited for?
• Does this mean Adaptive Path is anti-Flash?
• Where can I find examples of AJAX?
• What is the XMLHttpRequest object?
• Does Ajax have significant accessibility or browser compatibility limitations? ...
• How do I access data from other domains to create a mashup with Java?
• Does Java have support for Comet style server-side push?
• How do I create a thread to do AJAX polling?
• Is the XMLHttpRequest object part of a W3C standard?