Requesting XML from server [XMLHTTP]

The XmlHttpRequest object is probably not optimally named. It's basically making an HTTP request, and if the response happens to be XML, there are some convenience functions to get a fully parsed DOM of the answer.

The response, however, can be anything else (plain text, JavaScript, Perl, HTML, etc.) and you can do what you want with it, including calling eval() on it from a JavaScript script. You can do synchronous (blocking) or asynchronous (non-blocking) calls to your web server, and either be notified of completion by a callback for non-blocking calls, or just treat it like a function call for blocking calls.

<script language="JavaScript">

function getPage() {
  var strReply = new String;
  
  var objHTTP = new ActiveXObject("microsoft.XMLHTTP")
  objHTTP.open('GET', 'http://abc.def.qq/foo/bar.xml', false);
  objHTTP.send();
  
  /*  The following fields can be used:
   objHTTP.status;
   objHTTP.statusText;
   objHTTP.responseText;
   objHTTP.responseXML;
   objHTTP.responseXML.nodeName;
  */
}

</script>

if (window.netscape && netscape.security && netscape.security.PrivilegeManager.enablePrivilege) {
  netscape.security.PrivilegeManager.enablePrivilege('UniversalBrowserRead UniversalBrowserWrite');
}

var url = 'http://de.yahoo.com/';

var httpRequest;

if (window.XMLHttpRequest) {
   httpRequest = new XMLHttpRequest();
}
else if (window.ActiveXObject) {
   httpRequest = new ActiveXObject('Msxml2.XMLHTTP');
}
httpRequest.open('GET', url, true);

httpRequest.onreadystatechange = function (evt) {
  if (httpRequest.readyState == 4) {
    alert(httpRequest.responseText);
  }
};

httpRequest.send(null);


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Requesting XML from server [XMLHTTP]

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