JSFiddle - React, Tailwind, and code Playground

HTML

<body>
  <p>dfg</p>
  <h1>yoyo</h1>
  <h1>yoyo2</h1>
  <ul>
    <li>somo</li>
   </ul>
 </body>

JavaScript

var h1Elems = document.getElementsByTagName('h1');

for(var i=h1Elems.length -1; i>= 0; i--){
  h1Elems[i].parentElement.removeChild(h1Elems[i]);
}