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05.16.2008 at 03:13AM PDT, ID: 23407794
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Syncronous AJAX (SJAX) in Firefox not working

Asked by comcar in Asynchronous Javascript and XML (AJAX), JavaScript, Firefox Web Browser

Tags: Javascript, AJAX, Firefox 2, http://www.comcar.co.uk/newcar/companycar/widget/VED/index.html

I can't get Firefox to wait for an AJAX XMLHttpRequest to load before continuing with the rest of my Javascript. I've set the 3rd parameter of the .open() method to "false" to make it syncronous and it works fine in IE, but I've read that Firefox will ignore this and not monitor ".onreadystatechange".

I've tried using an IF statement after .open() and .send() to check if ".onreadystatechange" is NULL and then forcing the reponse text into a variable, but this doens't seem to work either.

I can see the repsonse is eventaully loading using Firebug but a method further down the code attempts to update the contents of a DIV in this responsetext, and it says the DIV doesn't exist, because the method is being called before the AJAX loads the response text!

Please help! I've been working on this project for far too long and I want to be rid of it!

Thanks,

PeteStart Free Trial 
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// This is the check in after the AJAX call, from a method called "loadDiv()"
 
xmlhttp.open("GET", url, sync);
xmlhttp.send(null);
 try {
  if(xmlhttp.obj.onreadystatechange == null)
   if ((xmlhttp.readyState == 4) && (xmlhttp.status == 200)) {
    document.getElementById(content).innerHTML = xmlhttp.responseText;
   }
 }catch (e){}
 
...
 
// And here's an example of where it fails
 
...
loadDiv(url,'hiddenVals', 'false');
carJSON.carID = document.getElementById('carId').value;
...
 
// With the "carId" element being returned in the responsetext from "loadDiv()".
 
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[+][-]05.16.2008 at 04:05AM PDT, ID: 21581696

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[+][-]05.16.2008 at 04:06AM PDT, ID: 21581708

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[+][-]05.16.2008 at 04:26AM PDT, ID: 21581780

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[+][-]05.16.2008 at 04:37AM PDT, ID: 21581814

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[+][-]05.16.2008 at 05:42AM PDT, ID: 21582145

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[+][-]05.16.2008 at 06:00AM PDT, ID: 21582270

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About this solution

Zones: Asynchronous Javascript and XML (AJAX), JavaScript, Firefox Web Browser
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Solution Provided By: JohnSixkiller
Participating Experts: 2
Solution Grade: B
 
 
[+][-]05.16.2008 at 06:01AM PDT, ID: 21582278

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[+][-]05.16.2008 at 07:10AM PDT, ID: 21582806

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[+][-]05.16.2008 at 08:04AM PDT, ID: 21583363

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[+][-]05.18.2008 at 11:20PM PDT, ID: 21595511

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