HTML Code

<div class="form-group">
    <label for="editor">Manana Editor</label>
    <textarea id="editor" name="editor"></textarea>
</div>

<ul class="list-inline text-right">
    <li class="list-inline-item">
        <button type="submit" class="btn btn-outline-primary">Submit</button>
    </li>
</ul>

<script type="text/javascript">
let objEditor = new MananaEditor(document.getElementById('editor'), {});
</script>