JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<p>In this example, the text field gets focus immediately after the document window has been loaded.</p>
 <textarea id="myText"> </textarea>

JavaScript

$(function() {
   $('#myText').keypress(function(){
   alert("test");
   });
   $('#myText').trigger(jQuery.Event('keypress', { keyCode: 65 })); 
});