js map sum values code example
Example 1: javascript sum of array
const sum = arr => arr.reduce((a, b) => a + b, 0);
Example 2: 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 3: sum of all numbers in an array javascript
const arrSum = arr => arr.reduce((a,b) => a + b, 0)
Example 4: javascript sum array values
function 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);