js

  data: {
    content_id:'',
    username:'',
    useravatar:"",
    hintImg:"/assets/icon/播放.svg",
    soundUrl:"",    //存储播放地址
    isPlay:false,
    soundID:"" ,     //云文件id,
}，
onLoad:{
    console.log(options)
    var index = JSON.parse(options.item);  //获取json对象
    db.collection('posts').doc(index).get({
      success: function (res) {
        console.log(res.data._fileid)
        this.setData({
          content_id: res.data._id,
          username: res.data._nickName,
          useravatar: res.data._avatarUrl,
          soundID: res.data._fileid
        })        
      }
    })


    console.log(this.data)
    console.log("soundID", this.data.soundID)
}

两行console命令结果：为什么这时候单个无法读取数据了？