JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://www.dawnsource.com/work/rangyinputs_jquery.js"></script>


<div onclick="cmon('cenas');"> cenas </div>
    
 <textarea class="guides_chapters_textarea" id="textarea" name="gmessage" rows="7" cols="25"> Insert starting items here</textarea>

JavaScript

function cmon(text){
    $("#textarea").insertText(text, 0, "collapseToEnd");
}