JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/dot-luv/jquery-ui.css">
<div></div>

CSS

div {
    width: 100px;
    height: 300px;
    border: 1px solid black;
    text-align: center;
}

JavaScript

$(function() {
    function appendDiv(i) {
        $("div").append("<span>--- " + i + " ---<br /></span>");
        if(i < 14) 
            setTimeout(function() { appendDiv(i+1); }, 100);  
    }
    appendDiv(0);
});