How to reverse the order in a FOR loop

Question

I\'ve a simple FOR statement like this:

var num = 10,
    reverse = false;

for(i=0;i

when rever

Answer 1

Surely in a language like Javascript there must be a way to define a local function and use that in the loop?

function SubtractFrom(val, subtractor) {
    return val - subtractor;
}

function PassThrough(val) {
    return val;
}

var num = 10;
var processor = reverse ? SubtractFrom(num-1) : PassThrough;

for (i = 0; i < num; i++) {
    console.log(processor(i));
}

Not knowing Javascript though, I don't know what actual form the function definitions would take.