|Checking for data||This snippet detects if a user ID is already taken an is an example of checking for the existence of data.|
|Finding a user by email||An example of searching for user accounts by email address.|
|Implementing role-based security||Using your Firebase data structure as a basis for your Security and Firebase Rules.|
|Get first list item||Retrieve only the first item in a list.|
|Getting only new items||Retrieves only items added in the future.|
|Extracting claims from a JWT||A helper function to extract claims from a JWT.|
|Creating data if it doesn't exist||How to create a user only if it doesn't already exist.|
|Assigning players in a multiplayer game||How to assign players spots in a game if the game isn't full yet.|
|Removing a pushed item||How to remove an object you've just added using push().|
|Getting the parent of a snapshot||Getting the parent object of a Firebase snapshot.|
You're viewing the legacy docs. They are deprecated as of May 18, 2016.
This page includes a list of small code snippets and recipes that we maintain. These resources are geared to help you learn Firebase or speed up development.