From 63f40866fdc9c74c7732084abca040ab06ebabde Mon Sep 17 00:00:00 2001
From: Richard Gibson <richard.gibson@gmail.com>
Date: Sun, 13 Jan 2013 21:38:40 -0500
Subject: [PATCH] Fix #13203: delegated events with selector matching
 Object.prototype property (cherry picked from commit
 31b95797155077e4e670c0bbb2c57815f89769a1)

---
 src/event.js       |  4 +++-
 test/unit/event.js | 14 ++++++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/src/event.js b/src/event.js
index 6c0dc41ca..772d65ef4 100644
--- a/src/event.js
+++ b/src/event.js
@@ -415,7 +415,9 @@ jQuery.event = {
 					matches = [];
 					for ( i = 0; i < delegateCount; i++ ) {
 						handleObj = handlers[ i ];
-						sel = handleObj.selector;
+
+						// Don't conflict with Object.prototype properties (#13203)
+						sel = handleObj.selector + " ";
 
 						if ( matches[ sel ] === undefined ) {
 							matches[ sel ] = handleObj.needsContext ?
diff --git a/test/unit/event.js b/test/unit/event.js
index 041920a53..bc98f73cb 100644
--- a/test/unit/event.js
+++ b/test/unit/event.js
@@ -1797,6 +1797,20 @@ test( "delegated event with delegateTarget-relative selector", function() {
 	markup.remove();
 });
 
+test( "delegated event with selector matching Object.prototype property (#13203)", function() {
+	expect(1);
+
+	var matched = 0;
+
+	jQuery("#foo").on( "click", "toString", function( e ) {
+		matched++;
+	});
+
+	jQuery("#anchor2").trigger("click");
+
+	equal( matched, 0, "Nothing matched 'toString'" );
+});
+
 test("stopPropagation() stops directly-bound events on delegated target", function() {
 	expect(1);
 
-- 
2.39.5