AJAX Browser Support

AJAX applications can only run in web browsers with complete XML support.

Only two web browsers available today - Internet Explorer (IE) and Mozilla Firefox.- have complete enough support for XML to run AJAX applications.

Since other browsers like Safari and Opera have limited, incomplete or incorrect XML support, this tutorial will focus on IE and Firefox examples.

The example on the previous page called a function called GetXmlHttpObject.

The purpose of the function is to solve the problem of creating different XMPHTTP objects for different browsers. 

The function is listed below:

function GetXmlHttpObject(handler)
{ 
var objXMLHttp=null
if (window.XMLHttpRequest)
{
objXMLHttp=new XMLHttpRequest()
}
else if (window.ActiveXObject)
{
objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
}
return objXMLHttp
}

The Full Source Code

The full source code to the example is listed in the next chapter.