JSFiddle - React, Tailwind, and code Playground
HTML
<div id='ding'>
</div>
JavaScript
var runningCount = -1;
var chromeWorker = [];
var testServer = [
'ma.speedtest.rcn.net',
'md.speedtest.rcn.net',
'il.speedtest.rcn.net',
'pa.speedtest.rcn.net',
'ny.speedtest.rcn.net'
];
for (var a = 0; a < 4; a++) {
for (var i = 0; i < testServer.length; i++) {
console.log (testServer[i]);
runningCount++;
console.log (runningCount );
}
}