Answers for "sum of a array in js"

array sum javascript

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

js sum of array

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

// Output: 10

javascript sum of array

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

sum function in javascript

let sum = (...para) => para.reduce((d,b) => d + b);