Remap or Map function in Javascript

Question

Of late, most of my programming experience has been in Processing, and more recently I have been wanting to branch out a little deeper in to some JavaScript, since they are

Answer 1

The function below produces the same behaviour as the original Processing function:

function map_range(value, low1, high1, low2, high2) {
    return low2 + (high2 - low2) * (value - low1) / (high1 - low1);
}