Average of numbers
JavaScript, Math · Oct 22, 2020

Calculates the average of two or more numbers.
- Use
Array.prototype.reduce()
to add each value to an accumulator, initialized with a value of0
. - Divide the resulting array by its length.
const average = (...nums) =>
nums.reduce((acc, val) => acc + val, 0) / nums.length;
average(...[1, 2, 3]); // 2
average(1, 2, 3); // 2