`deviceorientation` deep check

deviceorientationDeepCheck.js

(function () {
  var URL_SUCCESS = ''
    , URL_FAILURE = ''

  function checkSupport(supported, notSupported) {
    var failureTimeout = null

    function attachEvent() {
      if (window.addEventListener)
        window.addEventListener('deviceorientation', checkEventData, true)
      else
        window.attachEvent('ondeviceorientation', checkEventData)
    }

    function detachEvent() {
      if (window.removeEventListener)
        window.removeEventListener('deviceorientation', checkEventData, true)
      else
        window.detachEvent('ondeviceorientation', checkEventData)
    }

    function checkEventData(event) {
      if (event.alpha !== null) {
        supported()
        clearTimeout(failureTimeout)
        detachEvent()
      }
    }

    function checkHardwareSupport() {
      failureTimeout = setTimeout(function () {
        detachEvent()
        notSupported()
      }, 1500)
      attachEvent()
    }

      'DeviceOrientationEvent' in window
        ? checkHardwareSupport()
        : notSupported()
  }

  checkSupport(
    function () {
      document.createElement('img').src = URL_SUCCESS
    },
    function () {
      document.createElement('img').src = URL_FAILURE
    }
  )
})()