title: Jquery allow only Alpha Numeric + International characters (but not symbols)
body: <p>I need to validate a form disallowing any symbols like ❦ ❧ ლ ۝.</p>
  
  <p>I found this solution which works, but it also disallows international characters (e.g german characters - <b>ü</b>).</p>
  
  <p>Ideally I should also be able to allow some punctuation - eg "-", ":". </p>
  
  <pre><code>        if( /[^a-zA-Z0-9\-\/]/.test($('.my_textarea').val()) ) {
              isFormValid = false;
          }
  </code></pre>