Product of numeric values
JavaScript, Math · Oct 22, 2020

Calculates the product of two or more numbers/arrays.
- Use
Array.prototype.reduce()
to multiply each value with an accumulator, initialized with a value of1
.
const prod = (...arr) => [...arr].reduce((acc, val) => acc * val, 1);
prod(1, 2, 3, 4); // 24
prod(...[1, 2, 3, 4]); // 24