vue單頁面應用在ios跳轉標題不變

router.afterEach(to => {
  if (to.meta.title) {
    document.title = to.meta.title;
    // iOS 
    if (navigator.userAgent.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/)) {
      const _iframe= document.createElement("iframe");
      _iframe.style.display = "none";
      document.body.appendChild(_iframe);
      setTimeout(() => {
        document.body.removeChild(_iframe);
      }, 300);
    }
  }
});