XML HTTP Requests

If you are using IE 5.0 or higher, XML data can be requested from a server using an HTTP request.

The Browser Request

An HTTP request from the browser, can request XML from a server:

var objHTTP = new ActiveXObject("Microsoft.XMLHTTP")
objHTTP.Open('GET','httprequest.asp',false)
objHTTP.Send()

To view the result from the request, you can display the result in your browser:

document.all['A1'].innerText= objHTTP.status
document.all['A2'].innerText= objHTTP.statusText
document.all['A3'].innerText= objHTTP.responseText

Try it Yourself using JavaScript

Try it Yourself using VBScript

Communicating with the Server

With HTTP requests you can "communicate" with a server.

Communicating with a server using XML

In the example the response is "faked" on the server with this ASP code:

<%
response.ContentType="text/xml"
txt="<answer><text>12 Years</text></answer>"
response.write(txt)
%>

So, the answer will always be 12 years, no matter what question is asked. In real life, you have to write some code to analyze the question and respond with a correct answer.

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