I've spent 4-5 weeks learning Ruby and now I'm learning JavaScript for the very first time. As I learn JS, here are some of the differences that I want to keep straight.
Ruby
JavaScript
...naming variables...
...determining an object's value type...
...printing to the console...
...methods/functions...
...comparison operators (all of those equal signs)...
...incrementing/decrementing by 1...
...array syntax; finding the index...
...objects vs. hashes...