Javascript - Sum two arrays in single iteration

Question

I want to sum each value of an array of numbers with its corresponding value in a different array of numbers, and I want to do this without looping through each individual v

Answer 1

This example will work with different length variation:

let getSum = (arr1, arr2) =>  {
   let main = arr1.length >= arr2.length ? arr1 : arr2;
   let sec = arr1.length < arr2.length ? arr1 : arr2;
   return main.map((elem, i) => sec[i] ? elem + sec[i] : elem)
}