JavaScript (approximate) implementation of Python xrange() builtin

xrange.js

function xrange(b0, b1, quanta) {
	if (!quanta) { quanta = 1; }
	if (!b1) { b1 = b0; b0 = 0; }
	out = [];
	for (var i = b0, idx = 0; i < b1; i += quanta, idx++) {
		out[idx] = i;
	}
	return out;
}