如何从新的 `firebase.firestore.FieldValue.serverTimestamp()` 中获取 JavaScript 日期对象 [英] How to get a JavaScript Date object from the new `firebase.firestore.FieldValue.serverTimestamp()`

问题描述

Firebase Firestore 最近

Firebase Firestore recently changed how they manage timestamps, and I'm unable to retrieve a date object from the timestamp.

How do I get a date object from the new firebase.firestore.FieldValue.serverTimestamp()?

解决方案

You just need to do this:

yourFirestoreTimestamp.toDate()

If you look at the Timestamp object in the console you'll see that .toDate() is a function available by default on each Timestamp.

--

However, please note that when you haven't synced with Firestore yet FieldValue.serverTimestamp() gives nothing of value.

Only after you have synced with Firestore and the data is fetched again, the prop will be changed from serverTimestamp → to Timestamp

You'll also see much more information saved in a Timestamp object:

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