JSFiddle - React, Tailwind, and code Playground

HTML

<input type='text' value='1000'/><br/>
<ul></ul>

CSS

li { display: inline-block; margin-right: 10px }
body { font-family: monospace }

JavaScript

function req() {
    var starttime = (new Date()).getTime();
    $.ajax({
        url:'http://jsfiddle.net/echo/jsonp/',
        cache:false,
        dataType:'jsonp',
        complete:function() {
            var endtime = (new Date()).getTime();
            $('body ul').append('<li>'+(endtime-starttime)+'</li>');
        }
    });
    setTimeout(req, Math.max($('input').val(), 500));
}

req();