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Battery level volume control
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| <!DOCTYPE html> | |
| <html> | |
| <body> | |
| <h1>Battery level volume control</h1> | |
| <div id="player"></div> | |
| <script src="https://www.youtube.com/iframe_api"></script> | |
| <script> | |
| let player; | |
| function onYouTubeIframeAPIReady() { | |
| player = new YT.Player('player', { | |
| height: 390, | |
| width: 640, | |
| videoId: 'dQw4w9WgXcQ', | |
| events: {onReady: onPlayerReady} | |
| }); | |
| } | |
| function unsupported() { | |
| alert('Sorry, could not get the battery level!'); | |
| } | |
| function onPlayerReady(event) { | |
| if (!navigator.getBattery) { | |
| unsupported(); | |
| return; | |
| } | |
| navigator.getBattery().then(battery => { | |
| const setVolume = () => { | |
| player.setVolume(battery.level * 100); | |
| }; | |
| battery.onlevelchange = setVolume; | |
| setVolume(); | |
| player.playVideo(); | |
| }, unsupported); | |
| } | |
| </script> | |
| </body> | |
| </html> |
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