how to sum all numbers in array javascript code example

Example 1: sum of all numbers in an array javascript

const arrSum = arr => arr.reduce((a,b) => a + b, 0)

Example 2: sum all elements in array javascript

arr.reduce((a, b) => a + b)

Example 3: sum all the values in an array javascript

array.reduce((a, b) => a + b, 0)