通过js修改微信内置浏览器title

    document.setTitle = function(t) {
        document.title = t;
        var i = document.createElement('iframe');
        i.src = '//m.baidu.com/favicon.ico';
        i.style.display = 'none';
        i.onload = function() {
          setTimeout(function(){
            i.remove();
        }, 9)
      }
      document.body.appendChild(i);
  }

  setTimeout(function(){
     document.setTitle('雨田');
}, 1000);