JSFiddle - React, Tailwind, and code Playground

by laiqs2011

HTML

<ul>
    <li class="test">1111</li>
    <li>2222</li>
    <li class="test">3333</li>
    <li>4444</li>
    <li class="test">5555</li>
</ul>

JavaScript

var testItems = document.getElementsByClassName('test');

var len = testItems.length;

for (var i = 0; i < len; i++) {
    testItems[i].style.backgroundColor = 'yellow';
}