Some small optimizations to the event module. jQuery.event.trigger over 200% faster...

diff --git a/src/event.js b/src/event.js
index d0cacf6..4be4587 100644 (file)
--- a/src/event.js
+++ b/src/event.js
@@ -41,17 +41,10 @@ jQuery.event = {
                // Init the element's event structure
                var events = jQuery.data(elem, "events") || jQuery.data(elem, "events", {}),
                        handle = jQuery.data(elem, "handle") || jQuery.data(elem, "handle", function(){
-                               // returned undefined or false
-                               var val;
-
                                // Handle the second event of a trigger and when
                                // an event is called after a page has unloaded
-                               if ( typeof jQuery == "undefined" || jQuery.event.triggered )
-                                       return val;
-               
-                               val = jQuery.event.handle.apply(arguments.callee.elem, arguments);
-               
-                               return val;
+                               if ( typeof jQuery != "undefined" && !jQuery.event.triggered )
+                                       return jQuery.event.handle.apply(arguments.callee.elem, arguments);
                        });
                // Add elem as a property of the handle function
                // This is to prevent a memory leak with non-native
@@ -199,9 +192,10 @@ jQuery.event = {
                        if ( exclusive )
                                data[0].exclusive = true;
 
-                       // Trigger the event
-                       if ( jQuery.isFunction( jQuery.data(elem, "handle") ) )
-                               val = jQuery.data(elem, "handle").apply( elem, data );
+                       // Trigger the event, it is assumed that "handle" is a function
+                       var handle = jQuery.data(elem, "handle"); 
+                       if ( handle ) 
+                               val = handle.apply( elem, data );
 
                        // Handle triggering native .onfoo handlers (and on links since we don't call .click() for links)
                        if ( (!fn || (jQuery.nodeName(elem, 'a') && type == "click")) && elem["on"+type] && elem["on"+type].apply( elem, data ) === false )
@@ -237,38 +231,36 @@ jQuery.event = {
 
        handle: function(event) {
                // returned undefined or false
-               var val;
+               var val, namespace, all, handlers;
 
-               // Empty object is for triggered events with no data
-               event = jQuery.event.fix( event || window.event || {} ); 
+               event = arguments[0] = jQuery.event.fix( event || window.event );
 
                // Namespaced event handlers
-               var parts = event.type.split(".");
-               event.type = parts[0];
+               namespace = event.type.split(".");
+               event.type = namespace[0];
+               namespace = namespace[1];
+               all = !namespace && !event.exclusive; //cache this now, all = true means, any handler
 
-               var handlers = jQuery.data(this, "events") && jQuery.data(this, "events")[event.type], args = Array.prototype.slice.call( arguments, 1 );
-               args.unshift( event );
+               handlers = ( jQuery.data(this, "events") || {} )[event.type];
 
                for ( var j in handlers ) {
                        var handler = handlers[j];
-                       // Pass in a reference to the handler function itself
-                       // So that we can later remove it
-                       args[0].handler = handler;
-                       args[0].data = handler.data;
 
                        // Filter the functions by class
-                       if ( !parts[1] && !event.exclusive || handler.type == parts[1] ) {
-                               var ret = handler.apply( this, args );
-
-                               if ( val !== false )
-                                       val = ret;
-
-                               if ( ret === false ) {
-                                       event.preventDefault();
-                                       event.stopPropagation();
-                               }
+                       if ( all || handler.type == namespace ) {
+                               // Pass in a reference to the handler function itself
+                               // So that we can later remove it
+                               event.handler = handler;
+                               event.data = handler.data;
+                               
+                               val = handler.apply( this, arguments );
                        }
                }
+               
+               if ( val === false ) {
+                       event.preventDefault();
+                       event.stopPropagation();
+               }
 
                // Clean up added properties in IE to prevent memory leak
                if (jQuery.browser.msie)