比较Cloud Functions中的两个Firestore时间戳 [英] Compare two Firestore Timestamps in Cloud Functions

问题描述

我正在Firestore中编写更新功能，我想比较两个Timestamp.我已经尝试了多种方法，但是没有用.您能为我指出在Firestore中比较两个Timestamp的正确方法吗?

I'm writing update function in Firestore and I want to compare two Timestamp. I've tried multiple things but not working. Can you point me correct way of comparing two Timestamp in firestore.

exports.updateFunction = functions.firestore
    .document('xyz/{xyzId}')
    .onUpdate((change, context) => {
        var updatedXYZ = change.after.data();
        var oldXYZ = change.before.data();

        var newTimestamp = updatedXYZ.timing;
        var oldTimestamp = oldXYZ.timing;

        // I've tried following things but not working

        var result = newTimestamp === oldTimestamp; // not working
        var result = new Date(newTimestamp) - new Date(oldTimestamp); // not working

        return true;
    });

我要检查两个时间戳是否相同.

I want to check two Timestamp is same or not.

推荐答案

咨询Firestore的时间戳对象.时间戳具有一种称为

Consult the API docs for Firestore's Timestamp object. Timestamp has a method called isEqual() that will compare two timestamps.

var result = newTimestamp.isEqual(oldTimestamp);

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