Answers for "total sum in javascript"

sum of all numbers in an array javascript

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

javascript sum of array

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

sum all elements in array javascript

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

sum function in javascript

let sum = (...para) => para.reduce((d,b) => d + b);