Make sure that no extra whitespace is leftover after an addClass. Fixes #6050.

[jquery.git] / src / attributes.js

diff --git a/src/attributes.js b/src/attributes.js
index d217793..3e4c5f2 100644 (file)
--- a/src/attributes.js
+++ b/src/attributes.js
@@ -43,7 +43,7 @@ jQuery.fn.extend({
                                                var className = " " + elem.className + " ";
                                                for ( var c = 0, cl = classNames.length; c < cl; c++ ) {
                                                        if ( className.indexOf( " " + classNames[c] + " " ) < 0 ) {
-                                                               elem.className += " " + classNames[c];
+                                                               elem.className = jQuery.trim( elem.className + " " + classNames[c] );
                                                        }
                                                }
                                        }