title: Jquery Validation Engine: Expression for Disallowing Only Certain Characters
body: <p>I'm just getting my feet wet with Jquery Validation Engine and need help on how to write a new regex for disallowing certain characters. I just want to disallow some scripting/coding characters to satisfy a PCI scan requirement on a website.</p>
  
  <p>Per the instructions, I found the translation file where this needs to be added, and I've even located some expressions that are similar. For instance, here's one for allowing only letters and numbers and no spaces:</p>
  
  <pre><code>"onlyLetterNumber": {
    "regex": /^[0-9a-zA-Z]+$/,
    "alertText": "* No special characters allowed"
  },
  </code></pre>
  
  <p>How would I write something up like this, which DISALLOWS only a handful of characters, such as: <code>&lt;&gt;{}[]&amp;$</code>.</p>