title: Regex not allowing certain special characters
body: <p>I have the following regex which does not allow certain special characters:</p>
  
  <pre><code>if (testString.match(/[`~,.&lt;&gt;;':"\/\[\]\|{}()-=_+]/)){    
      alert("password not valid");
  }
  else
  {
      alert("password valid");
  }
  </code></pre>
  
  <p>This is working. This regex will accept a password if it does not contain any of the special characters inside the bracket <code>(~,.&lt;&gt;;':"\/\[\]\|{}()-=_+)</code>.</p>
  
  <p>My problem here is it also don't allow me to input numbers which is weird. </p>
  
  <p>Anything I missed here? Thanks in advance!</p>
  
  <p>Here is a sample:</p>
  
  <p><a href="http://jsfiddle.net/BCn7h/2/">jsFiddle</a></p>