sum methods in js code example

Example 1: js sum of array

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

// Output: 10

Example 2: sum javascript

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