title: What is the keyCode for "$"?
body: <p>I am trying to disable all other characters from being entered in text input.</p>
  
  <p>Since to get the <code>$</code> you have to press the <kbd>shift</kbd>-key and the <kbd>4</kbd>-key. I am not sure how you would get the keyCode for somthing like this?</p>