Array sum JavaScript
const arr = [1, 2, 3, 4];
const sum = arr.reduce((a, b) => a + b, 0);
// sum = 10
Marton
const arr = [1, 2, 3, 4];
const sum = arr.reduce((a, b) => a + b, 0);
// sum = 10function getArraySum(a){
var total=0;
for(var i in a) {
total += a[i];
}
return total;
}
var payChecks = [123,155,134, 205, 105];
var weeklyPay= getArraySum(payChecks); //sums up to 722// If you do not want to use array.reduece you can itereate through the array and then get the solution.
const getSum = (arr)=>{
let sum = 0;
for(key of arr){
sum += key
}
return sum
}
[1, 2, 3, 4].reduce((a, b) => a + b, 0)