JSFiddle - React, Tailwind, and code Playground

by Harmonix Motion

HTML

<!-- Create the editor container -->
    <form>
        <!--https://html.com/attributes/textarea-wrap/ -->
        <textarea name="about" type="hidden" required></textarea>
        <div id="editor"></div>
        <!--<div id="editor2"></div>-->

        <button type="submit">Submit</button>
    </form>
<script>
  var frmMain = document.getElementById("form");
  frmMain.onsubmit = function() {
    var requiredDiv = document.getElementById("editor");
    if (requiredDiv.innerHTML.trim().length == 0) {
      alert("Please fill the div as well.");
      return false;
    }
  };
</script>