JSFiddle - React, Tailwind, and code Playground

by gunderson

HTML

<div id="intervals">0</div>
<iframe id="keepalive"/>

CSS

#keepalive{
  display:block;
}

JavaScript

var ival = 0;

function keepalive () {
    var ka = document.querySelector("#keepalive");
    ka.href = "about:blank";
    document.querySelector("#intervals").innerHTML = ++ival;
}

var iosSleepPreventInterval = setInterval(keepalive, 20000);