JSFiddle - React, Tailwind, and code Playground

HTML

<div class="test"></div>
<div class="test"></div>

CSS

.test {
    background-color: #eee;
    height: 40px;
    width: 40px;
}

JavaScript

var el = $('<div>приветики</div>');
var item = $('.test').eq(0);
item.after(el);
item.next().hide().slideDown(3000);