Remove oldIE proprietary event methods/properties.

diff --git a/src/event.js b/src/event.js
index 41ec7d165546ebed9ef01e2574ee1bf7545cc3e4..6c6a51678347625299cfc09128d5d1ab14a3d06a 100644 (file)
--- a/src/event.js
+++ b/src/event.js
@@ -86,14 +86,10 @@ jQuery.event = {
                                handlers = events[ type ] = [];
                                handlers.delegateCount = 0;
 
-                               // Only use addEventListener/attachEvent if the special events handler returns false
+                               // Only use addEventListener if the special events handler returns false
                                if ( !special.setup || special.setup.call( elem, data, namespaces, eventHandle ) === false ) {
-                                       // Bind the global event handler to the element
                                        if ( elem.addEventListener ) {
                                                elem.addEventListener( type, eventHandle, false );
-
-                                       } else if ( elem.attachEvent ) {
-                                               elem.attachEvent( "on" + type, eventHandle );
                                        }
                                }
                        }
@@ -580,26 +576,11 @@ jQuery.event = {
 // The 1.7 special event interface should provide all the hooks needed now.
 jQuery.event.handle = jQuery.event.dispatch;
 
-jQuery.removeEvent = document.removeEventListener ?
-       function( elem, type, handle ) {
-               if ( elem.removeEventListener ) {
-                       elem.removeEventListener( type, handle, false );
-               }
-       } :
-       function( elem, type, handle ) {
-               var name = "on" + type;
-
-               if ( elem.detachEvent ) {
-
-                       // #8545, #7054, preventing memory leaks for custom events in IE6-8
-                       // detachEvent needed property on element, by name of that event, to properly expose it to GC
-                       if ( typeof elem[ name ] === "undefined" ) {
-                               elem[ name ] = null;
-                       }
-
-                       elem.detachEvent( name, handle );
-               }
-       };
+jQuery.removeEvent = function( elem, type, handle ) {
+       if ( elem.removeEventListener ) {
+               elem.removeEventListener( type, handle, false );
+       }
+};
 
 jQuery.Event = function( src, props ) {
        // Allow instantiation without the 'new' keyword
@@ -614,7 +595,7 @@ jQuery.Event = function( src, props ) {
 
                // Events bubbling up the document may have been marked as prevented
                // by a handler lower down the tree; reflect the correct value.
-               this.isDefaultPrevented = ( src.defaultPrevented || src.returnValue === false ||
+               this.isDefaultPrevented = ( src.defaultPrevented ||
                        src.getPreventDefault && src.getPreventDefault() ) ? returnTrue : returnFalse;
 
        // Event type
@@ -648,32 +629,17 @@ jQuery.Event.prototype = {
                this.isDefaultPrevented = returnTrue;
 
                var e = this.originalEvent;
-               if ( !e ) {
-                       return;
-               }
-
-               // if preventDefault exists run it on the original event
-               if ( e.preventDefault ) {
+               if ( e && e.preventDefault ) {
                        e.preventDefault();
-
-               // otherwise set the returnValue property of the original event to false (IE)
-               } else {
-                       e.returnValue = false;
                }
        },
        stopPropagation: function() {
                this.isPropagationStopped = returnTrue;
 
                var e = this.originalEvent;
-               if ( !e ) {
-                       return;
-               }
-               // if stopPropagation exists run it on the original event
-               if ( e.stopPropagation ) {
+               if ( e && e.stopPropagation ) {
                        e.stopPropagation();
                }
-               // otherwise set the cancelBubble property of the original event to true (IE)
-               e.cancelBubble = true;
        },
        stopImmediatePropagation: function() {
                this.isImmediatePropagationStopped = returnTrue;