Add a try/catch to handle the exception thrown by unloaded iframes in IE. Fixes ...

diff --git a/src/event.js b/src/event.js
index afe92af..f766896 100644 (file)
--- a/src/event.js
+++ b/src/event.js
@@ -896,7 +896,10 @@ jQuery( window ).bind( 'unload', function() {
        for ( var id in jQuery.cache ) {
                // Skip the window
                if ( id != 1 && jQuery.cache[ id ].handle ) {
-                       jQuery.event.remove( jQuery.cache[ id ].handle.elem );
+                       // Try/Catch is to handle iframes being unloaded, see #4280
+                       try {
+                               jQuery.event.remove( jQuery.cache[ id ].handle.elem );
+                       } catch(e) {}
                }
        }
 });