问题
i do check the WebRTC for checking the existence of microphone, work form chrome to edge but unfortunately ie doesn't support. I found some online websites but non on ie do work correctly. How can i detect if client browser connect with microphone on ie ?
回答1:
IE does not support WebRTC and there's no other method on the browser to get a stream from the microphone.
Though I haven't tested them, there are plugins to add WebRTC functionality to IE, like Temasys WebRTC plugin or webrtc-everywhere.
来源：https://stackoverflow.com/questions/37838805/access-microphone-on-internet-explorer