JSFiddle - React, Tailwind, and code Playground

HTML

<div id="container">
   <div class="dontdelete">...</div>
   <div class="deleteme">...</div>
   <div class="dontdelete">...</div>
   <div class="deleteme">...</div>
   <div class="dontdelete">...</div>
   <div class="deleteme">...</div>
</div>

JavaScript

var container = document.getElementById("container");
var elements = container.getElementsByClassName("deleteme");

while (elements[0]) {
    elements[0].parentNode.removeChild(elements[0]);
}