Receiving video via webcam

script.js

let getUserMedia;
let browserUserMedia = navigator.webkitGetUserMedia
    || navigator.mozGetUserMedia
    || navigator.getUserMedia;

if (!browserUserMedia) throw 'Your browser doesn\'t support WebRTC';

getUserMedia = browserUserMedia.bind(navigator);

let successCb = stream => {
    var videoElement = document.getElementById('video');
    videoElement.srcObject = stream;
}
let errorCb = e => {
    console.erorr(e)
}

getUserMedia({ audio: true, video: true }, successCb, errorCb);