How to prevent changes to certain elements in Contenteditable?

Question

JavaScript

<div class="block_title_text" id="block_text" contenteditable="true">

<p placeholder="Текст"></p>
<ol>
<li></li>
<li></li>
<li></li>
</ol>

</div>

How in this code to forbid changing the list ol?

Answer 1

<ol contenteditable="false">