Answers for "sum all element of array in js"

sum of all numbers in an array javascript

const arrSum = arr => arr.reduce((a,b) => a + b, 0)

how sum all array element with for

// define a list
const list = [1,2,3,4,5];

// create a function return result of sum of elements
const result = () => {
  let sum = 0;
  for (let i = 0; i < list.length; i++) {
    sum += list[i];
  }
  return sum
}
console.log(result());