AJAX XMLHttpRequest
The XMLHttpRequest object makes AJAX possible.
The XMLHttpRequest
The XMLHttpRequest object is the key to AJAX.
It has been available ever since Internet Explorer 5.5 was released in July 2000, but not fully discovered before people started to talk about AJAX and Web 2.0 in 2005.
Creating An XMLHttpRequest Object
Different browsers use different methods to create an XMLHttpRequest object.
Internet Explorer uses an ActiveXObject.
Other browsers use a built in JavaScript object called XMLHttpRequest.
Here is the simplest code you can use to overcome this problem:
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