Fix #10794. .triggerHandler() should not .preventDefault().

This also provides a resolution for #10699.

src/event.js

@@ -281,11 +281,6 @@ jQuery.event = {
 		event.namespace_re = event.namespace? new RegExp("(^|\\.)" + namespaces.join("\\.(?:.*\\.)?") + "(\\.|$)") : null;
 		ontype = type.indexOf( ":" ) < 0 ? "on" + type : "";
 
-		// triggerHandler() and global events don't bubble or run the default action
-		if ( onlyHandlers || !elem ) {
-			event.preventDefault();
-		}
-
 		// Handle a global trigger
 		if ( !elem ) {
 
@@ -335,7 +330,7 @@ jQuery.event = {
 		}
 
 		// Fire handlers on the event path
-		for ( i = 0; i < eventPath.length; i++ ) {
+		for ( i = 0; i < eventPath.length && !event.isPropagationStopped(); i++ ) {
 
 			cur = eventPath[i][0];
 			event.type = eventPath[i][1];
@@ -349,15 +344,11 @@ jQuery.event = {
 			if ( handle && jQuery.acceptData( cur ) && handle.apply( cur, data ) === false ) {
 				event.preventDefault();
 			}
-
-			if ( event.isPropagationStopped() ) {
-				break;
-			}
 		}
 		event.type = type;
 
 		// If nobody prevented the default action, do it now
-		if ( !event.isDefaultPrevented() ) {
+		if ( !onlyHandlers && !event.isDefaultPrevented() ) {
 
 			if ( (!special._default || special._default.apply( elem.ownerDocument, data ) === false) &&
 				!(type === "click" && jQuery.nodeName( elem, "a" )) && jQuery.acceptData( elem ) ) {

test/unit/event.js

@@ -1056,7 +1056,7 @@ test("trigger(type, [data], [fn])", function() {
 });
 
 test("trigger(eventObject, [data], [fn])", function() {
-	expect(25);
+	expect(28);
 
 	var $parent = jQuery("<div id='par' />").hide().appendTo("body"),
 		$child = jQuery("<p id='child'>foo</p>").appendTo( $parent );
@@ -1132,6 +1132,13 @@ test("trigger(eventObject, [data], [fn])", function() {
 
 	$child.unbind();
 	$parent.unbind().remove();
+	
+	// Ensure triggerHandler doesn't molest its event object (#xxx)
+	var event = jQuery.Event( "zowie" );
+	jQuery( document ).triggerHandler( event );
+	equal( event.type, "zowie", "Verify its type" );
+	equal( event.isPropagationStopped(), false, "propagation not stopped" );
+	equal( event.isDefaultPrevented(), false, "default not prevented" );
 });
 
 test(".trigger() bubbling on disconnected elements (#10489)", function() {