JSFiddle - React, Tailwind, and code Playground
JavaScript
var negativeorpositivenumber = -5;
var dir = negativeorpositivenumber > 0 ? 1 : -1;
var min = negativeorpositivenumber > 0 ? 0 : negativeorpositivenumber;
var max = negativeorpositivenumber > 0 ? negativeorpositivenumber : 0;
for (var i = 0; i >= min && i <= max; i += dir) {
console.log(i);
}