Ajax does not work on IE7 ActiveX are disabled.
Following is the XHR instantiation code in JQuery.
var xhr = window.ActiveXObject ? new ActiveXObject
("Microsoft.XMLHTTP") : new XMLHttpRequest();
The check window.ActiveXObject returns non-null and non-undefined on
IE7 even if activeX are disabled. However, the instantiation (new
ActiveXObject("Microsoft.XMLHTTP")) throws an error. The code does not
even use IE7's native XMLHttpRequest as a fallback.
This should be changed to something like:
var xhr;
try {
xhr = new ActiveXObject("Microsoft.XMLHTTP"); //IE with ActiveX
enabled
} catch(ex) {
xhr = new XMLHttpRequest(); //IE7+ with ActiveX disabled and Non-IE
}
Steps to reproduce:
1. Disable ActiveX on IE7 (To disable ActiveX go to Tools -> Internet
Options -> Security -> Internet/Intranet -> Custom Level -> Run
ActiveX controls and plugins -> Disable.)
2. Try sending an Ajax Request.
I have created ticket 3623 http://dev.jquery.com/ticket/3623 to track
the issue.
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