how sum array in js code example
Example 1: array sum javascript
const arr = [1, 2, 3, 4];
const sum = arr.reduce((a, b) => a + b, 0);
// sum = 10
Example 2: javascript sum of array
const sum = arr => arr.reduce((a, b) => a + b, 0);
const arr = [1, 2, 3, 4];
const sum = arr.reduce((a, b) => a + b, 0);
// sum = 10
const sum = arr => arr.reduce((a, b) => a + b, 0);