Python is also dynamically typed, but it does something sane:

>> "1" - 1 Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: unsupported operand type(s) for -: 'str' and 'int'

You're confusing dynamic/static typing with weak/strong typing. JavaScript typing is dynamic and weak, while Python's is dynamic and strong.

No I'm confusing dynamically typed langs with loosely typed ones. Thanks for bringing this to my attention :)

"Dynamically typed" doesn't mean "refuses to give any type errors, ever".