加载一个空的iframe，触发document加载事件，使微信webview重新获取title

export function initTitle(title = "") {
  // document.title = title;
  var iframe = document.createElement('iframe');
  iframe.style.visibility = 'hidden';
  iframe.style.width = '1px';
  iframe.style.height = '1px';
  iframe.onload = function () {
    setTimeout(function () {
      document.body.removeChild(iframe);
    }, 100);
  };
  document.body.appendChild(iframe);
}

来源：https://www.taoquns.com/paper/111