JSFiddle - React, Tailwind, and code Playground

HTML

<div>1</div>
<div>2</div>
<div>3</div>
<div>4</div>
<div>5</div>

CSS

.red {color: red;}

JavaScript

var from = 3, to = 5;
$('div').slice(parseInt(from) - 1, parseInt(to)).addClass('red');