Is it possible to reflect the arguments of a Javascript function?

Question

Is it possible to get all of the arguments a Javascript function is written to accept? (I know that all Javascript function arguments are \"optional\")? If

Answer 1

Now when you say outside the body of the function I can only imagine that you want to know what the names of the parameters are? Because as far as the values go, you already know what arguments you are passing. Other answers have said you can get the length of the function, which is the number of parameters it explicitly declares. Now if you want to know the names outside the function, how about the toString hack?

Consider

function f(oh, hi, there) {
    return hi + there / oh;
}

Then

alert(f);

What do you see? RIght, just regex them out! Okay, SORRY to bring this up. Perhaps it is not standard ECMAScript, but it, uh, works in Chrome....