JSFiddle - React, Tailwind, and code Playground
HTML
<div class="container">
<ul>
<li>
<div class="box">First div</div>
</li>
<li>
<div class="box">Second div</div>
</li>
<li>
<div class="box">Third div</div>
</li>
</ul>
JavaScript
$(document).ready(function() {
var myColors = [
'#1afe1a', '#abc', '#123'
];
var i = 0;
$('div.box').each(function() {
$(this).css('background-color', myColors[i]);
i = (i + 1) % myColors.length;
});
});