JavaScript - subtract array of numbers

In this article, we would like to show you how to subtract array of numbers using JavaScript.

Quick solution:

// ONLINE-RUNNER:browser;

const numbers = [10, 1, 2];
const sum = (accumulator, number) => accumulator - number;

console.log(numbers.reduce(sum));  // 7   (10 - 1 - 2 = 7)

Alternative solution

In this section, we present an alternative solution for older JavaScript versions.

// ONLINE-RUNNER:browser;

function subtract(accumulator, number) {
    return accumulator - number;
}

var numbers = [10, 1, 2];
var result = numbers.reduce(subtract);

console.log(result);  // 7   (10 - 1 - 2 = 7)

See also

1. JavaScript - sum array of numbers

References

1. Array.prototype.reduce() - JavaScript | MDN