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

NoSleep.js seems to work in iOS 11 and it reportedly works on Android as well.

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Old answer

This is a simple HTML-only method to do that: looping inline autoplaying videos (it might also work in Android Chrome 53+)

See the same demo on CodePen (includes a stopwatch)

Notes

• Avoid loading a big video just for this. Perhaps make a short, tiny, black-only video or use
• To make it fully work, the videos needs to be always in the viewport or you need to start its playback via JS: video.play()