Ajax: remove event dependency from the ajax module

Closes gh-1695

diff --git a/src/ajax/xhr.js b/src/ajax/xhr.js
index a733eded02808bc15fc774c776f0bb51a2d32690..32afd2309ba0c5a1c35e23aaad24b3c229eaa578 100644 (file)
--- a/src/ajax/xhr.js
+++ b/src/ajax/xhr.js
@@ -23,8 +23,9 @@ var xhrId = 0,
 
 // Support: IE9
 // Open requests must be manually aborted on unload (#5280)
-if ( window.ActiveXObject ) {
-       jQuery( window ).on( "unload", function() {
+// See https://support.microsoft.com/kb/2856746 for more info
+if ( window.attachEvent ) {
+       window.attachEvent( "onunload", function() {
                for ( var key in xhrCallbacks ) {
                        xhrCallbacks[ key ]();
                }