Firestore Array Query

Learn how to query an array in the Firestore database with the new "array-contains" option in version 5.3 https://angularfirebase.com/lessons/query-by-array-contains-firestore/

• 5.3 SDK https://firebase.google.com/support/release-notes/js
• Firestore https://firebase.google.com/docs/firestore/ ... https://www.youtube.com/watch?v=4t2eHrFW_0M