/點選瀏覽器上的返回按鈕，返回上一頁並重新整理

  $(document).ready(function($) {
      if (window.history && window.history.pushState) {
        $(window).on('popstate', function() {
          var hashLocation = location.hash;
          var hashSplit = hashLocation.split("#!/");
          var hashName = hashSplit[1
 
];

          if (hashName !== '') {
            var hash = window.location.hash;
            if (hash === '') {
              self.location=document.referrer;
            }
          }
        });
        window.history.pushState(null, null, '');
      }
    });