Comments on: IE 7 - Native xmlHttpRequest Not So Good

By: Ralf

Ralf — Sun, 06 Jul 2008 06:41:18 +0000

I can only agree to use Microsoft.XMLHTTP Active X object in IE7 in favor of XMLhttpRequest object. Have been working on a little instant messenger today and the followin code did not work in IE7 with the XMLhttpRequest:

function refreshIM()
{
script = ‘ajax/im_prog.php’;
querystring = ‘a=refresh&refuid=’ + im_refuid;
sendHTTPRequest2(script, querystring, ‘get’, refreshIM_callback);
setTimeout(”refreshIM()”, (im_refresh_interval * 1000));
}

the problem was with setTimeout. It simply did not work in IE7 with XMLHttpRequest, only with Microsoft.XMLHTTP.

There are no problems in Firefox 3 and Opera 9.51

By: Sean

Sean — Thu, 12 Jun 2008 02:57:14 +0000

Madness….

My Ajax program has been working like a charm in firefox, but in IE7 its dog…. You have just saved me….

I removed the if httpObject is NOT present line like u did.

Champion!

By: Dan

Dan — Thu, 27 Dec 2007 07:22:03 +0000

Doesn’t it make perfect sense though? If Microsoft needs to compete with Google to take over IT, then issuing a change that breaks Google’s products is an absolutely fantastic way of levelling the field.

JSON for the win.

By: conversationing » Blog Archive » Today is brought to you by the letters AJAX and IE7

Thu, 13 Sep 2007 05:43:35 +0000

[…] are also concerns of it being much slower and buggier than XMLHTTP is. I guess a new implementation is less likely to be optimised, but it apparently has […]

By: 15 minutes media » The Release of IE7 and what it means for website owners

15 minutes media » The Release of IE7 and what it means for website owners — Sun, 03 Dec 2006 20:01:55 +0000

[…] AJAX XMLHTTP: The IE Blog says: “to have your cross-browser AJAX work better with IE7, you really should be invoking the native XMLHttpRequest (the cross-browser one) first to see if itâ€™s available before instantiating the ActiveX control, instead of the other way around.” Read this guys comments http://www.techtoolblog.com/archives/ie-7-native-xmlhttprequest-not-so-good […]

By: Cobold

Cobold — Thu, 30 Nov 2006 10:49:49 +0000

Thank you very much, this article saved me hours! Stupid Microsoft and Ie

By: Anthony

Anthony — Mon, 13 Nov 2006 20:08:03 +0000

This article answered my question and now I am not having any problems.

By: Tim

Tim — Fri, 27 Oct 2006 15:01:35 +0000

I got the fix for for my application but I suspect this might be a problem for additional ajax frameworks. It looks like my call back function wasn’t executing for every request (again I believe it has to with IE7 not reusing the same javascript object for each request). I changed to pass the results directly to javascript var object.

OLD javascript code:
A_Class.Ajax.Search(keyValue,SearchBy, SearchWord_CallBack);

function SearchWord_CallBack(response) { var word = response.value; if(response != null) { document.getElementById("Display").style.visibility = "visible"; document.getElementById("Display").innerHTML = word.substring(0,word.length - 4); } }

New Code:
var word = A_Class.Ajax.Search(keyValue, SearchBy).value; document.getElementById("Display").style.visibility = "visible"; document.getElementById("Display").innerHTML = word.substring(0,word.length - 4);

By: Tim

Tim — Thu, 26 Oct 2006 19:15:34 +0000

I found this today explaining the difference of the new XmlHttpRequest oject verses the old Microsoft.XMLHTTP object.

http://blogs.missiondata.com/?p=64
His thought is that IE 7 doesn’t reuse the javascript for every request, like Microsoft.XMLHTTP does. This maybe a problem with the ajax framework I am using - Ajax Professional - http://www.ajaxinfo.net…. More to come on this issue.

By: Tim

Tim — Wed, 25 Oct 2006 21:10:24 +0000

Eric,
I’ll see if I can get something I can show publicly to demo the difference. Like I said, the http request are being returned with data but IE7 doesn’t display the results with the same performance with the option turned off. I wasn’t aware they are both using MSXML, making wonder if this is a rendering issue.