add all numbers in array javascript code example
Example 1: 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)
)
Example 2: adding numbers in an array javascript
console.log(
[].reduce((a, b) => a + b)
)
Example 3: javascript sum of array
const sum = arr => arr.reduce((a, b) => a + b, 0);
Example 4: sum of all numbers in an array javascript
const arrSum = arr => arr.reduce((a,b) => a + b, 0)
Example 5: how to add up all numbers in an array
var numbers = [10, 20, 30, 40]
var sum = 0;
for (var i = 0; i < numbers.length; i++) { sum += numbers[i]}
Example 6: 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);