问题
Since latest version of Chrome 62, only under iOS 11 devices, when I try using navigator.mediaDevices - it's null. Nothing in the documentation suggests this functionality was removed.
In the meantime I opened a bug under Chrome, but this is both critical and strange.
Anyone come across this issue? Any ideas?
来源：https://stackoverflow.com/questions/47207084/navigator-mediadevices-is-null-on-ios-with-chrome-62