Firebase 9 Firestore Get A Document By ID Using getDoc()

Learn how to get document by ID using the getDoc() method in Firebase version 9 Cloud Firestore Database.

• Get All Documents From A Collection
• Get Document By ID → you’re here

The sample Firestore Database has a cities collection that has four documents in it like in the screenshot below.

Let’s get the first document of the cities collection by id.

In this case: Edmonton document using its ID (2l3bcSGs2vZBIc3RODwp)

Import Firestore Database and de-structure the three methods that we need:

• getFirestore() → Firestore Database
• doc() → It takes references of database, collection name, and ID of a document as arguments
• getDoc() → getDoc() query gets data of a specific document from collection based references mentioned in the doc()method.

import { getFirestore, doc, getDoc } from https://www.gstatic.com/firebasejs/9.8.4/firebase-firestore.js";

The import statement uses the CDN version of the Firebase SDK in this example.