Fix #12383. All selectors should be delegateTarget-relative

Author: dmethvin

src/event.js

@@ -361,7 +361,7 @@ jQuery.event = {
 		// Make a writable jQuery.Event from the native event object
 		event = jQuery.event.fix( event || window.event );
 
-		var i, j, cur, jqcur, ret, selMatch, matched, matches, handleObj, sel, related,
+		var i, j, cur, ret, selMatch, matched, matches, handleObj, sel, related,
 			handlers = ( (jQuery._data( this, "events" ) || {} )[ event.type ] || []),
 			delegateCount = handlers.delegateCount,
 			args = [].slice.call( arguments ),
@@ -382,23 +382,18 @@ jQuery.event = {
 		// Avoid non-left-click bubbling in Firefox (#3861)
 		if ( delegateCount && !(event.button && event.type === "click") ) {
 
-			// Pregenerate a single jQuery object for reuse with .is()
-			jqcur = jQuery(this);
-			jqcur.context = this;
-
 			for ( cur = event.target; cur != this; cur = cur.parentNode || this ) {
 
 				// Don't process clicks (ONLY) on disabled elements (#6911, #8165, #xxxx)
 				if ( cur.disabled !== true || event.type !== "click" ) {
 					selMatch = {};
 					matches = [];
-					jqcur[0] = cur;
 					for ( i = 0; i < delegateCount; i++ ) {
 						handleObj = handlers[ i ];
 						sel = handleObj.selector;
 
 						if ( selMatch[ sel ] === undefined ) {
-							selMatch[ sel ] = jqcur.is( sel );
+							selMatch[ sel ] = jQuery( sel, this ).index( cur ) >= 0;
 						}
 						if ( selMatch[ sel ] ) {
 							matches.push( handleObj );

test/unit/event.js

@@ -2343,9 +2343,10 @@ test("jQuery.off using dispatched jQuery.Event", function() {
 });
 
 test( "delegated event with delegateTarget-relative selector", function() {
-	expect(2);
-	var markup = jQuery("<ul><li><a id=\"a0\"></a><ul id=\"ul0\"><li><a id=\"a0_0\"></a></li><li><a id=\"a0_1\"></a></li></ul></li></ul>").appendTo("#qunit-fixture");
+	expect(3);
+	var markup = jQuery("<ul><li><a id=\"a0\"></a><ul id=\"ul0\"><li class=test><a id=\"a0_0\"></a></li><li><a id=\"a0_1\"></a></li></ul></li></ul>").appendTo("#qunit-fixture");
 
+	// Positional selector (#11315)
 	markup
 		.on( "click", ">li>a", function() {
 			ok( this.id === "a0", "child li was clicked" );
@@ -2356,7 +2357,24 @@ test( "delegated event with delegateTarget-relative selector", function() {
 			})
 		.end()
 		.find("a").click().end()
-		.remove();
+		.find("#ul0").off();
+	
+	// Non-positional selector (#12383)
+	markup = markup.wrap("<div />").parent();
+	markup
+		.find("#ul0")
+		.on( "click", "div li a", function() {
+			ok( false, "div is ABOVE the delegation point!" );
+		})
+		.on( "click", "ul a", function() {
+			ok( false, "ul is the delegation point!" );
+		})
+		.on( "click", "li.test a", function() {
+			ok( true, "li.test is below the delegation point." );
+		})
+		.find("#a0_0").click();
+	
+	markup.remove();
 });
 
 test("stopPropagation() stops directly-bound events on delegated target", function() {