Prevent iOS mobile safari from going idle / auto-locking / sleeping?

Question

In an iOS app you can set application.idleTimerDisabled = YES to prevent the phone from auto locking.

I need to do this in mobile safari for a game li

Answer 1

You can stop sleeping and screen dimming in iOS Safari by faking a refresh every 20–30 seconds

var stayAwake = setInterval(function () {
    location.href = location.href; //try refreshing
    window.setTimeout(window.stop, 0); //stop it soon after
}, 30000);

Please use this code responsibly, don't use it "just because". If it's only needed for a bit, disable it.

clearInterval(stayAwake); //allow device sleep again when not needed

Tested in Safari iOS 7, 7.1.2, and 8.1, but it may not work in UIWebView browsers like Chrome for iOS or the Facebook app.

Demo: http://jsbin.com/kozuzuwaya/1