Skip to main content

Reduce

Reduces array to a single value by applying a function to each element​

let numbers = [1, 2, 3, 4, 5];

// Sum all numbers
let sum = numbers.reduce((accumulator, current) => accumulator + current, 0);
console.log(sum); // 15

// With an initial value of 10
let sumPlus10 = numbers.reduce((accumulator, current) => accumulator + current, 10);
console.log(sumPlus10); // 25