let data = {
name: 'Los Angeles',
state: 'CA',
country: 'USA'
};
// Add a new document in collection "cities" with ID 'LA'
let setDoc = db.collection('cities').doc('LA').set(data);let washingtonRef = db.collection('cities').doc('DC');
// Atomically add a new region to the "regions" array field.
let arrUnion = washingtonRef.update({
regions: admin.firestore.FieldValue.arrayUnion('greater_virginia')
});
// Atomically remove a region from the "regions" array field.
let arrRm = washingtonRef.update({
regions: admin.firestore.FieldValue.arrayRemove('east_coast')
});var docData = {
stringExample: "Hello world!",
booleanExample: true,
numberExample: 3.14159265,
dateExample: firebase.firestore.Timestamp.fromDate(new Date("December 10, 1815")),
arrayExample: [5, true, "hello"],
nullExample: null,
objectExample: {
a: 5,
b: {
nested: "foo"
}
}
};
db.collection("data").doc("one").set(docData).then(() => {
console.log("Document successfully written!");
});