JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html>
<head>
  <script src="http://code.jquery.com/jquery-latest.js"></script>
</head>
<body>

    <input type="text">
    
    
<script>
$("input").keydown(function(){
  $("input").css("background-color","blue");
});
    </script>


</body>
</html>