optimized example regex

Author: Kurtis LoVerde

demo.html

@@ -59,7 +59,7 @@
             var cfg= new $.fn.RestrictedTextFieldConfig();
 
             cfg.addType( "vowels", /^[aeiou]*$/, null );
-            cfg.addType( "additionExpr", /^\d+\+\d+$/, /^\d+$|^\d+\+$/ );
+            cfg.addType( "additionExpr", /^\d+\+\d+$/, /^\d+\+?$/ );
          }
 
          function flashBorder( jqField, cssClass, times, delayMillis ) {
@@ -327,7 +327,7 @@ <h3>Complex type:  mathematical expression</h3>
             <li>An integer</li>
             <li>An integer followed by a plus sign</li>
          </ul>
-         <p>The regular expression for that is <code>/^\d+$|^\d+\+$</code>.  Putting it all together, we get:</p>
+         <p>The regular expression for that is <code>/^\d+\+?$/</code>.  Putting it all together, we get:</p>
          <code>cfg.addType( "additionExpr", /^\d+\+\d+$/, /^\d+$|^\d+\+$/ );</code><br/><br/>
          <input type="text" id="txtAdditionExpr" />
       </div>