Firebase Not Defined. Super Fixable, But Fix Is Not Working. Hello World Example

This bug is probably staring right at me. Super simple, include the firebase.js, and all should be ready to go. Trying to display records. Stuck on this not defined thing. Yet all

Solution 1:

You are using Firebase version 3.0 with the syntax of the legacy version...

  new Firebase(url) //not valid anymore

check this link https://firebase.google.com/docs/web/setup

here it is defined how firebase 3.0 is integrated with javascript