微信小程序动态设置详情页导航栏标题

onLoad: function () {
    wx.request({
      url: '',
      data: {
        'pk': tid
      },
      method: 'GET',
      header: { 'content-type': 'application/x-www-form-urlencoded' },
      success: function (res) {
	  var datatitle = res.data.title
          wx.setNavigationBarTitle({
          title: datatitle ,
          success:function(){
            console.log("当前页面标题为\"" + datatitle + "\"" );
          },
          complete:function(){
            console.log("动态修改页面标题");
          }
        });

  }