JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-2.2.2.js"></script>
<body>
<form>
<input type="text" class="monitored"/>
</form>
</body>

JavaScript

$( document ).ready(function() {
	$('.monitored').keyup(function(){
  	if ($('.monitored').val().length > 23){
    	// trim and send the value to the server
    	$.post( "listener.php", { value: $('.monitored').val().substring(0,23)} );
			// empty the input
			$('.monitored').val('');
    	// maybe add delay?
    }
  });
});