<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CKEditor</title>
<script src="https://cdn.ckeditor.com/ckeditor5/33.0.0/classic/ckeditor.js"></script>
</head>
<body>
<div id="editor">This is some sample content.</div>
<script>
ClassicEditor
.create( document.querySelector( '#editor' ) )
.then( editor => {
console.log( editor );
} )
.catch( error => {
console.error( error );
} );
</script>
</body>
</html>