JavaScript Masterclass - Zero to Job-Ready with Hands-On Projects - Fetching Documents - I / 255

The video tutorial covers the initialization of a Firebase app and Firestore database, including setting up collection references and accessing documents using getDocs. It addresses common issues with dev tools and demonstrates how to loop over and access document data. The tutorial concludes with a recap and hints at future topics like adding and deleting documents.

What is the first step when working with Firebase services?

• Initialize the app and connect services

• Directly access the database

• Import all Firebase modules

• Start with authentication

Which module is essential to import for using Firestore?

• Firebase Auth

• Get Firestore

• Firebase Realtime Database

• Firebase Storage

What function is used to access all documents in a Firestore collection?

• getDocs

• retrieveAll

• fetchDocs

• getCollection

What should you do if you encounter a dev tool error while accessing Firestore data?

• Clear browser cache

• Restart the server

• Re-import Firebase modules

• Disable JS and CSS maps in dev tools

How can you iterate over documents retrieved from Firestore?

• Use map function

• Use a for loop

• Use a while loop

• Use forEach method

What method is used to add a new document to a Firestore collection?

• addDoc

• newDoc

• insertDoc

• createDoc

What is the purpose of the getDoc method in Firestore?

• To access all documents in a collection

• To delete a document

• To access a single document

• To update a document