Firebase TIMESTAMP to date and Time

Question

I am using firebase for my chat application. In chat object I am adding time stamp using Firebase.ServerValue.TIMESTAMP method.

I need to show the messa

Answer 1

For those looking for the Firebase Firestore equivalent. It's

firebase.firestore.FieldValue.serverTimestamp()

e.g.

firebase.firestore().collection("cities").add({
    createdAt: firebase.firestore.FieldValue.serverTimestamp(),
    name: "Tokyo",
    country: "Japan"
})
.then(function(docRef) {
    console.log("Document written with ID: ", docRef.id);
})
.catch(function(error) {
    console.error("Error adding document: ", error);
});

Docs

Answer 2

new Date(timestamp.toDate()).toUTCString()

Answer 3

I converted to this format

let timestamp = '1452488445471';
let newDate = new Date(timestamp * 1000)
let Hours = newDate.getHours()
let Minutes = newDate.getMinutes()
const HourComplete = Hours + ':' + Minutes
let formatedTime = HourComplete
console.log(formatedTime)

Answer 4

timestamp is an object

timestamp= {nanoseconds: 0,
seconds: 1562524200}

console.log(new Date(timestamp.seconds*1000))

Answer 5

In fact, it only work to me when used

firebase.database.ServerValue.TIMESTAMP

With one 'database' more on namespace.

Answer 6

Solution for newer versions of Firebase (after Jan 2016)

The proper way to attach a timestamp to a database update is to attach a placeholder value in your request. In the example below Firebase will replace the createdAt property with a timestamp:

firebaseRef = firebase.database().ref();
firebaseRef.set({
  foo: "bar", 
  createdAt: firebase.database.ServerValue.TIMESTAMP
});

According to the documentation, the value firebase.database.ServerValue.TIMESTAMP is: "A placeholder value for auto-populating the current timestamp (time since the Unix epoch, in milliseconds) by the Firebase Database servers."