Ticket #2514: 2514_2.patch

_source/core/tools.js

@@ -299 +299 @@
          * @returns {Number} The (zero based) index of the first entry that matches
          *              the entry, or -1 if not found.
          * @example
-         * var letters = [ 'a', 'b', 'c' ];
+         * var letters = [ 'a', 'b', 0, 'c', false ];
          * alert( CKEDITOR.tools.indexOf( letters, 'b' ) );  "1"
+         * alert( CKEDITOR.tools.indexOf( letters, '0' ) );  "-1" because 0 !== '0'
+         * alert( CKEDITOR.tools.indexOf( letters, false ) );  "4" because 0 !== false
          */
-        indexOf : function( array, entry )
+
+        indexOf : (function()
         {
-                for ( var i = 0, len = array.length ; i < len ; i++ )
+            if ( Array.indexOf ) {              // Use browser implementation.
+                        return function( array, entry )
+                        {
+                                return index = array.indexOf( entry );
+                        }
+                }
+                return function( array, entry )
                 {
-                        if ( array[ i ] == entry )
-                                return i;
+                        for ( var i = 0, len = array.length ; i < len ; i++ )
+                        {
+                                if ( array[ i ] === entry )
+                                        return i;
+                        }
+                        return -1;
                 }
-                return -1;
-        }
+        })()
 };
 
 // PACKAGER_RENAME( CKEDITOR.tools )