JSFiddle - React, Tailwind, and code Playground
by zlojnaxa
HTML
<div>
<div>тут текст</div> <p>тут еще текст</p> текст текст текст
</div>
JavaScript
let DIV = document.getElementsByTagName('div')[0];
DIV.innerHTML += `<b>${DIV.childNodes[4].textContent}<b>`;
DIV.childNodes[4].textContent = '';