sum of all numbers in an array javascript
const arrSum = arr => arr.reduce((a,b) => a + b, 0)sum of all numbers in an array javascript
const arrSum = arr => arr.reduce((a,b) => a + b, 0)how to sum only even numbers in an array
let numStr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
const sumEvens = (numStr) => {
let sum = 0;
for (let i = 0; i < numStr.length; i++) {
if (i % 2 === 0){
sum = sum + numStr[i];
}
}
return sum;
}
console.log(sumEvens(numStr));Copyright © 2021 Codeinu
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