Don't pass handler function as data for events + test (#1140)

src/event/event.js

@@ -14,7 +14,7 @@ jQuery.event = {
 			element = window;
 		
 		// if data is passed, bind to handler 
-		if( data != undefined ) { 
+		if( data != handler ) { 
         	// Create temporary function pointer to original handler 
 			var fn = handler; 
 
@@ -55,7 +55,7 @@ jQuery.event = {
 			if (element.addEventListener)
 				element.addEventListener(type, element.$handle, false);
 			else if (element.attachEvent)
-				element.attachEvent("on" + type, element.$handle, false);
+				element.attachEvent("on" + type, element.$handle);
 		}
 
 		// Add the function to the element's handler list
@@ -101,7 +101,7 @@ jQuery.event = {
 					if (element.removeEventListener)
 						element.removeEventListener(type, element.$handle, false);
 					else if (element.detachEvent)
-						element.detachEvent("on" + type, element.$handle, false);
+						element.detachEvent("on" + type, element.$handle);
 					ret = null;
 					delete events[type];
 				}
@@ -274,7 +274,7 @@ jQuery.fn.extend({
 	 */
 	bind: function( type, data, fn ) {
 		return this.each(function(){
-			jQuery.event.add( this, type, fn || data, data );
+			jQuery.event.add( this, type, fn || data, fn && data );
 		});
 	},
 	
@@ -309,7 +309,7 @@ jQuery.fn.extend({
 			jQuery.event.add( this, type, function(event) {
 				jQuery(this).unbind(event);
 				return (fn || data).apply( this, arguments);
-			}, data);
+			}, fn && data);
 		});
 	},
 

src/event/eventTest.js

 module("event");
 
 test("bind()", function() {
-	expect(10);
+	expect(11);
 
 	var handler = function(event) {
 		ok( event.data, "bind() with data, check passed data exists" );
 		ok( event.data.foo == "bar", "bind() with data, Check value of passed data" );
-	}
+	};
 	$("#firstp").bind("click", {foo: "bar"}, handler).click();
 	
 	reset();
@@ -15,9 +15,14 @@ test("bind()", function() {
 		ok( event.data.foo == "bar", "Check value of passed data" );
 		ok( data, "Check trigger data" );
 		ok( data.bar == "foo", "Check value of trigger data" );
-	}
+	};
 	$("#firstp").bind("click", {foo: "bar"}, handler).trigger("click", [{bar: "foo"}]);
 	
+	var handler = function(event) {
+		ok ( !event.data, "Check that no data is added to the event object" );
+	};
+	$("#firstp").unbind().bind("click", handler).trigger("click");
+	
 	// events don't work with iframes, see #939
 	var tmp = document.createElement('iframe');
 	document.body.appendChild( tmp );
@@ -39,7 +44,7 @@ test("bind()", function() {
 	var counter = 0;
 	function selectOnChange(event) {
 		equals( event.data, counter++, "Event.data is not a global event object" );
-	}
+	};
 	$("select").each(function(i){
 		$(this).bind('change', i, selectOnChange);
 	}).trigger('change');
@@ -90,7 +95,7 @@ test("trigger(event, [data]", function() {
 		ok( a == 1, "check passed data" );
 		ok( b == "2", "check passed data" );
 		ok( c == "abc", "check passed data" );
-	}
+	};
 	$("#firstp").bind("click", handler).trigger("click", [1, "2", "abc"]);
 });