Answers for "js reduce sum array"

sum of number using reduce

console.log(
  [1, 2, 3, 4].reduce((a, b) => a + b, 0)
)
console.log(
  [].reduce((a, b) => a + b, 0)
)

javascript sum of array

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

javascript reduce sum

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

javascript reduce sum

let nums = [1, 2, 3];

nums.reduce((curr, next) => curr + next);

.reduce mdn

arr.reduce(callback( accumulator, currentValue[, index[, array]] )[, initialValue])