javascript - 如何从 Firebase timeStamp 获取当前数据

Question

我在我的数据对象中使用 ServerTimeStamp，现在我只想检索当前数据。

var happycount =  admin.database().ref(`/tariq-road/happy`)
    .orderByChild('timeStamp')
    .equalTo(Date.now())
    .once('value', (snapshot) => {
      var data = snapshot.numChildren()
      console.log('data:  ', data)
    })

如何获取今天的数据？

Answer 1

var start = new Date();
start.setHours(0,0,0,0);

var end = new Date();
end.setHours(23,59,59,999);

var happycount =  admin.database().ref(`/tariq-road/happy`)
    .orderByChild('timeStamp')
    .startAt(start.valueOf())
    .endAt(end.valueOf())
    .once('value', (snapshot) => {
      var data = snapshot.numChildren()
      console.log('data:  ', data)
    })