js add up sum in array code example
Example 1: total array with function
console.log(
[1, 2, 3, 4].reduce((a, b) => a + b, 0)
)
console.log(
[].reduce((a, b) => a + b, 0)
)
Example 2: Write a function that takes an array of number values and returns the sum.
function amountTotal(amount) {
var total = 0;
for (i = 0; i < amount.length; ++i) {
total += amount[i]; // add each element in an array to total
}
return total;// return sum of elements in array
}