Learn Javascript Reduce method with 10 examples

The reduce method applies a function to every item of an array and accumulates the result iteratively from a starting point then returns a single value/object.

This starting value can be specified or if not reduce will use the first item in the array.

Most of these examples might not be the idea solution for the problem, but the idea is to illustrate how we can use reduce to solve them.

Alright let's start with.

Summation and Multiplication:

∑ and ∏

In this example you can leave the initial value out, as it will grab the first item in the array, but you can also give it to have an offset or a bias pretty useful for that

Find the maximum in an array:

Ramiro - Ramgen