html

<p><span style="font-weight: bold; color: blue">Whoa, bold blue text!</span></p>
<p>
  <span style="font-style: italic; color: red">Exciting: italic red text!</span>
</p>
<p>Boring normal text ;-(</p>

<hr />

<p contenteditable="true">
  Go on, try pasting some content into this editable paragraph and see what
  happens!
</p>

<p class="result"></p>

js

const editable = document.querySelector("p[contenteditable]");
const result = document.querySelector(".result");

editable.addEventListener("input", (e) => {
  result.textContent = e.dataTransfer.getData("text/html");
});