JSFiddle - React, Tailwind, and code Playground

HTML

<div id='outerdiv'>
    <div class='class-1'>A</div>
    <div class='class-2'>B</div>
    <div class='class-3'>C</div>
    <div class='class-4'>D</div>
    <div class='news'>E</div>
</div>

JavaScript

var divs = document.querySelectorAll('#outerdiv > div:not(.news)');

for (var i = 0; i < divs.length; i++) {
    divs[i].style.backgroundColor = 'red';
}