Javascript is interesting but it has many quirks and powerful features. I'd say start with Python first, since you can start off with just the language. I actually enjoy writing in Python myself because I feel that it pushes me to stick to coding standards. Also, Python's class-based OOP might make more sense at first to Javascript's prototype system.
Good Javascript programming requires coding differently than you would in Python and C, you have to understand and use strange but cool features like closures and prototypal objects.
Good Javascript programming requires coding differently than you would in Python and C, you have to understand and use strange but cool features like closures and prototypal objects.