Fix #10791. SVG clamors for special treatment of its class names.

src/event.js

@@ -21,7 +21,7 @@ var rformElems = /^(?:textarea|input|select)$/i,
 		return (
 			(!m[1] || elem.nodeName.toLowerCase() === m[1]) &&
 			(!m[2] || elem.id === m[2]) &&
-			(!m[3] || m[3].test( elem.className ))
+			(!m[3] || m[3].test( ((elem.attributes || {})[ "class" ] || {}).value ))
 		);
 	},
 	hoverHack = function( events ) {

test/unit/event.js

@@ -1184,6 +1184,31 @@ test(".trigger() doesn't bubble load event (#10717)", function() {
 	jQuery( window ).off( "load" );
 });
 
+test("Delegated events in SVG (#10791)", function() {
+	expect(2);
+
+	var svg = jQuery(
+			'<svg height="1" version="1.1" width="1" xmlns="http://www.w3.org/2000/svg">'+
+			'<rect class="svg-by-class" x="10" y="20" width="100" height="60" r="10" rx="10" ry="10"></rect>'+
+			'<rect id="svg-by-id" x="10" y="20" width="100" height="60" r="10" rx="10" ry="10"></rect>'+
+			'</svg>'
+		).appendTo( "body" );
+
+	jQuery( "body" )
+		.on( "click", "#svg-by-id", function() {
+			ok( true, "delegated id selector" );
+		})
+		.on( "click", ".svg-by-class", function() {
+			ok( true, "delegated class selector" );
+		})
+		.find( "#svg-by-id, .svg-by-class" )
+			.trigger( "click" )
+		.end()
+		.off( "click" );
+
+	svg.remove();
+});
+
 test("jQuery.Event( type, props )", function() {
 
 	expect(5);