Answers for "js sum method"

array sum javascript

const arr = [1, 2, 3, 4];
const sum = arr.reduce((a, b) => a + b, 0);
// sum = 10

sum of all numbers in an array javascript

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

js sum of array

[1, 2, 3, 4].reduce((a, b) => a + b, 0)

// Output: 10

js array sum

console.log(
  [1, 2, 3, 4].reduce((a, b) => a + b, 0)
)
console.log(
  [].reduce((a, b) => a + b, 0)
)

javascript sum of array

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

sum all elements in array javascript

arr.reduce((a, b) => a + b)