script.js

var log = false;
var iterate = function (left, right, step)
{
	log = (left - right <= 0 && step > 0 || left - right >=0 && step < 0);
	(log) && console.log(left);
	left += step;
	(log) && iterate(left, right, step);
}
var tempValue = iterate(5, -5, -2);