[Javascript] Firefox 1.5+ and Ajax responses

[Bosky, Dave]

I've got an AJAX enabled page which sends a few parameters to a Servlet
and returns a simple 'Y or N' back to the page.

For some reason in Firefox 1.5 the 'readystate' parameter seems to
undefined, my 'onreadystatechange' function checks the 'readystate' for
a value of '4' but firefox never sets it to 4.

So nothing happens. 

 

I've installed the Firebug plugin to examine the http headers. It shows
my parameters got sent to the servlet, it shows a response value of 'Y
or N' and the header information all looks correct but nothing happens
in Firefox. Of course everything works fine in Internet Explorer.

 

Code snippets below.

 

Thanks,

Dave

 

 

<!-- JS Functions -->

function createRequest() {           

            if (!request && typeof XMLHttpRequest != 'undefined') {

                        try {

                                    request = new XMLHttpRequest();

                        } catch (e) {

                                    alert("Your browser is not
supporting XMLHTTPRequest");

                                    request = false;

                        }

            }  else if (window.ActiveXObject) {

                        var aVersions = [ "MSXML2.XMLHttp.5.0",
"MSXML2.XMLHttp.4.0", "MSXML2.XMLHttp.3.0", "MSXML2.XMLHttp",
"Microsoft.XMLHttp" ];

                        for (var i = 0; i < aVersions.length; i++) {

                                    try {

                                                request = new
ActiveXObject(aVersions[i]);

                                    } catch (oError) {}

                        }

            }

            return request;

}

function confirmSelectedServices(total) {

                        var request = createRequest();

 
request.open("get","/servlet/validate?items="+total);

                        request.onreadystatechange = function() {

                        if (request.readystate == 4) {

                                    if (request.status == 200)  {

                                    var msg = request.responseText;

                                    }

                        }

}

 

<!-Servlet snippet -->

String status = "Y";

response.setContentType("text/xml");

response.setHeader("Cache-Control","no-cache");

response.getWriter().write(status);


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