How different are the semantics between Python and JavaScript?

Question

Both these languages seem extremely similar to me. Although Python supports actual classes instead of being prototype-based, in Python classes are not all that different from f

Answer 1

I'll add a few I haven't seen mentioned yet:

• JavaScript supports object-literal notation. Python doesn't exactly work the same way, but Python dictionaries are similar to JavaScript associative arrays.

• JavaScript objects/arrays support that cool feature where you don't need to quote (single-word) strings when creating new objects:

  var foo = { bar: "baz" };

• Accessing associative array keys in JavaScript can be done using dot notation, in addition to brace notation. That is, these are the same:

  foo.bar; //returns "baz"

  foo["bar"]; // returns "baz"

• Python's anonymous function (lambda) syntax is not as flexible as JavaScript's anonymous functions.

• Python has, like, a standard library and stuff. (And yes, I know about Rhino et al., but the libraries they give you are not standard. There's no standardized way to read a file in JavaScript... that I know of.)
• You can run JavaScript in a browser. Python... not so much. ;)