Jacob Paris

An animated guide to Array Reduce

Last updated January 14, 2022 by Jacob Paris

This is an example of an animated guide to Array Reduce

Sum an array

JS

Sum an array with Reduce

Step 0/9

let numbers = [1
1
, 2, 3, 4, 5, 6, 7, 8, 9]
 
numbers.reduce((sum, number) => {
  return sum + number
}, 0
0
)

Get the element with the greatest value

JS

Find the greatest value with reduce

Step 0/6

let numbers = [11
11
, 17, 13, 5, 6, 9]
 
numbers.reduce((max, number) => {
  return max > number
    ? max
    : number
}, 0
0
)