Check if browser supports Youtube 360 video

youtube360check.js

function browserSupports360 () {
  // YouTube supports 360 videos in a limited set of browsers,
  // see https://support.google.com/youtube/answer/6178631

  var ua = navigator.userAgent;

  // No mobile browser is supported at the moment
  if (/Mobile/.test(ua) || /Tablet/.test(ua)) return false;

  // Chrome >= 40
  if (/Chrome\/[^123][0-9]/.test(ua) && !/Edge\//.test(ua) && !/OPR\//.test(ua)) return true;

  // Firefox >= 40
  if (/Firefox\/[^123][0-9]/.test(ua)) return true;

  // Microsoft Edge
  if (/Edge\//.test(ua)) return true;

  // Opera >= 30
  if (/OPR\/[^12][0-9]/.test(ua)) return true;

  return false;
}