odin-default-js-exercises/sumAll/sumAll.js

23 lines
470 B
JavaScript

const sumAll = function(first, second) {
if (first < 0 || typeof second === "string" || Array.isArray(second)) {
return "ERROR";
} else {
let sum = 0;
if (first < second) {
for (let i = first; i <= second; i++) {
sum = sum + i;
// console.log(sum);
}
} else {
for (let i = second; i <= first; i++) {
sum = sum + i;
// console.log(sum);
}
}
return sum;
}
}
module.exports = sumAll