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I have a use case where we donot want the user who is taking a test get sleep timeout while in test which is of 3 hrs. I was looking at nosleep.js but i has cpu overuse problem as it was not working in windows.
I was wondering how test taking apps do it, also how youtube achieves this.
Any help on this is really appreciated
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style. background = 'black'", 100000); This code will set the background of the document to black, which will keep the screen awake.
Go to Control Panel > Personalization > Change Screensaver. Next to On Resume, Display Logon Screen, uncheck the box. This prevents your system from sleeping.
Wake Lock API arrives in Chrome 79. However none of the other browser support this as of now.
https://developers.google.com/web/updates/2019/12/nic79#wake-lock
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YouTube handles this by simply playing video. When you play a video with sound in the browser, the browser requests a wake lock automatically so as not to interrupt the user.
It isn't clear from your question what your specific requirements are, but if playing a video is possible, try that.
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