js判断是否是手机页面

<script>
if (/mobile/i.test(navigator.userAgent) || /android/i.test(navigator.userAgent)) document.body.classList.add('mobile');
window.addEventListener('load', function(event) {
 setTimeout(function () {
  hab('#sup-post-2');
  hab('#gd1-inner');
 }, 1000);
});
</script>