Answers for "javascript sum values of array"

array sum javascript

const arr = [1, 2, 3, 4];
const sum = arr.reduce((a, b) => a + b, 0);
// sum = 10

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)

javascript reduce sum

arrSum = function(arr){  return arr.reduce(function(a,b){    return a + b  }, 0);}