JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdn.ckeditor.com/4.4.7/standard-all/ckeditor.js"></script>
<script src="https://cdn.ckeditor.com/4.4.7/standard-all/adapters/jquery.js"></script>
<textarea id="item_ckeditor"><div zattribute='z' attribute='a'>simple</div></textarea>
<button id="item_docompare">Destroy</button>

JavaScript

$(document).ready(function() {
    var isdirty = function(ckeditor) {
        return ckeditor.initialdata !== ckeditor.getData();
        
    };
    CKEDITOR.config.allowedContent = true;
    CKEDITOR.on('instanceReady', function (event) {
        event.editor.initialdata = event.editor.getData();
    });
    $("#item_ckeditor").ckeditor();
    $("#item_docompare").on("click", function (event) {
        
        var $textarea = $("#item_ckeditor"),
            editor = $textarea.ckeditorGet();
        alert('isdirty: ' + isdirty(editor));
        editor.destroy();
       

    });
});