elisa

range.js

function return1StepArray(num1, num2, step) {
  let myArray = [];
  //Edge Cases
  //Check if there are three values:
  if (!num1 || !num2 || !step) {
    return "Input three numbers.";
  }

  //Receive only numbers
  if (
    typeof num1 !== "number" ||
    typeof num2 !== "number" ||
    typeof step !== "number"
  ) {
    return "Error, use only numbers";
  }

  //Round numbers down
  num1 = Math.floor(num1);
  num2 = Math.floor(num2);
  step = Math.floor(step);

  //Receive only numbers in ascending order
  if (num1 >= num2) {
    return "Error! numbers are not in ascending order";
  }

  for (let i = num1; i <= num2; i += step) {
    myArray.push(i);
  }

  return myArray;
}

console.log(return1StepArray(2, 10, 2));

sum.js

function sumNumbers(arr) {
  let temp = 0;
  let ok = true;

  for (let i = 0; i <= arr.length - 1; i++) {
    if (typeof arr[i] != "number") {
      ok = false;
      break;
    } else {
      temp += arr[i];
    }
  }
  if (ok == false) {
    return "Error";
  } else {
    return temp;
  }
}

console.log(sumNumbers([1, 2, 3, "4", 5]) + 10);