diff --git a/src/core.js b/src/core.js
index 2bd8c4b32..9558fd060 100644
--- a/src/core.js
+++ b/src/core.js
@@ -36,8 +36,9 @@ var
 	// Used for detecting and trimming whitespace
 	core_rnotwhite = /\S/,
 	core_rspace = /\s+/,
-	trimLeft = /^\s+/,
-	trimRight = /\s+$/,
+
+	// IE doesn't match non-breaking spaces with \s
+	rtrim = core_rnotwhite.test("\xA0") ? (/^[\s\xA0]+|[\s\xA0]+$/g) : /^\s+|\s+$/g,
 
 	// A simple way to check for HTML strings
 	// Prioritize #id over <tag> to avoid XSS via location.hash (#9521)
@@ -601,7 +602,7 @@ jQuery.extend({
 		function( text ) {
 			return text == null ?
 				"" :
-				text.toString().replace( trimLeft, "" ).replace( trimRight, "" );
+				text.toString().replace( rtrim, "" );
 		},
 
 	// results is for internal usage only
@@ -913,11 +914,5 @@ if ( jQuery.browser.webkit ) {
 	jQuery.browser.safari = true;
 }
 
-// IE doesn't match non-breaking spaces with \s
-if ( core_rnotwhite.test( "\xA0" ) ) {
-	trimLeft = /^[\s\xA0]+/;
-	trimRight = /[\s\xA0]+$/;
-}
-
 // All jQuery objects should point back to these
 rootjQuery = jQuery(document);