the hack method that can make the title in weixin's webview be changable

hackSetTitleInWeixin.js

hackSetTitle = (title) => {
  document.title = title;

  const iframe = document.createElement('iframe');
  iframe.src = '/favicon.ico';
  iframe.style.visibility = 'hidden';

  const listener = () => {
    setTimeout(() => {
      iframe.removeEventListener('load', listener);
      setTimeout(() => {
        document.body.removeChild(iframe);
      }, 0);
    }, 0);
  };
  iframe.addEventListener('load', listener);
  document.body.appendChild(iframe);
}