WebRTC 视频设备

<script>
	navigator.mediaDevices.enumerateDevices()
	.then(function(devices) {
		var videoDevices = devices.filter(function(device) {
			return device.kind === 'videoinput';
		});
		var videoDeviceList = document.getElementById('video-devices');
		videoDeviceList.innerHTML = '<ul>';
		videoDevices.forEach(function(device) {
			videoDeviceList.innerHTML += '<li>' + device.label + '</li>';
		});
		videoDeviceList.innerHTML += '</ul>';
	})
	.catch(function(err) {
		console.log(err.message);
	});
</script>