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why is new XmlHttpRequest() throwing an exception in Firefox 4.0.1

  • 1 cavab
  • 2 have this problem
  • 1 view
  • Last reply by cor-el

ehewlett
ehewlett
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the following javascript has been working in prior version of Firefox (3.x) but is throwing an exception in Firefox 4.0.1 oddly enough the request object is being created in the try block but then is nulled in the catch block 

   var xmlHttp;

   // branch for native XMLHttpRequest object
   if(window.XMLHttpRequest) {
   	try {

xmlHttp = new XMLHttpRequest(); 

       } catch(e) {

xmlHttp = null; 

       }
   // branch for IE/Windows ActiveX version
   } else if(window.ActiveXObject) {
     ....
the following javascript has been working in prior version of Firefox (3.x) but is throwing an exception in Firefox 4.0.1 oddly enough the request object is being created in the try block but then is nulled in the catch block var xmlHttp; // branch for native XMLHttpRequest object if(window.XMLHttpRequest) { try { xmlHttp = new XMLHttpRequest(); } catch(e) { xmlHttp = null; } // branch for IE/Windows ActiveX version } else if(window.ActiveXObject) { ....

All Replies (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
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A good place to ask questions and advice about web development is at the mozillaZine Web Development/Standards Evangelism forum.
The helpers at that forum are more knowledgeable about web development issues.
You need to register at the mozillaZine forum site in order to post at that forum.

See http://forums.mozillazine.org/viewforum.php?f=25