JSFiddle - React, Tailwind, and code Playground

HTML

<ul></ul>

CSS

li.horizontal{
    color: red;
}

JavaScript

data = [{"title": "a"},{"title": "d"},{"title": "c"},{"title": "d"}];

$.each(data, function(i, v) {
    $('<li></li>').html(v.title).appendTo('ul');
});
$('ul li:last').addClass('horizontal');