Keyup Textare Example

http://stackoverflow.com/questions/43023576/textarea-keypress-not-working/43023698#43023698

HTML

<script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
<textarea id="yourcode"></textarea>

JavaScript

$(document).ready(function(){
  $("#yourcode").keyup(function() {
    //alert("I found Hogwarts.");
  });
});