Eh. I'm not a JavaScript developer, just winging it I got 9/25. Seems like there are 3 broad categories of (my) confusion. 1. floating point. Floating point is

Eh. I'm not a JavaScript developer, just winging it I got 9/25. Seems like there are 3 broad categories of (my) confusion. 1. floating point. Floating point is tricky, and when I use it seriously I have to look up a lot of special cases. I often forget I can get Nan, and it'll infect everything it touches. This is common in just about any language. 2. One or two of those , questions got me. I don't _hate_ it, but there's a little frustration there. Mostly I just need to know the syntax. If I was writing javascript for money, I imagine it would bite me once or twice, then I'd just memorize the rule. 3 (the biggie) implicit conversion. Oof. seems like a lot of types can be converted to other types, and it's not obvious to me what the precedence hierarchy is. With C I have to look up the edge cases around signed/unsigned, but usually it's just use the next bigger one int -> long. Java does the .toString for everything which has bitten me once or twice. I really don't have a sense of javascript implicit conversion. Some of those seem really subtle.