test.html

<!DOCTYPE html>
<html>
<head>
  <meta charset='utf-8'>
  <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
  <script type="text/javascript" src="jquery.keycombinator.js"></script>
  <script type="text/javascript">
    $(document).ready(function(){
      $(':text').makeKeyCombinator({
        defaultCombos: {
          mac: ['⌃', 'F'],
          win: ['Ctrl', 'F'],
          unix: ['Ctrl', 'F']
        },
        onComplete: function(keyComboData){ console.log(keyComboData); }
      });
    });
  </script>
</head>
<body>
  <form>
    Enter a key combination: <input type="text" name="keycombo" />
  </form>
    <button onclick="$(':text').clearKeyCombinator()">Clear</button>
    <button onclick="$(':text').defaultKeyCombinator()">Reset to Default</button>
</body>
</html>