Aggregate Elements JS Advanced

function aggregateElements(arr) {
    let sum = arr.reduce((a, b) => a + b, 0);
    let inverseSum = arr.reduce((a, b) => a + 1 / b, 0);
    let string = arr.join('');

    console.log(sum);
    console.log(inverseSum);
    console.log(string);
}

OR

function aggregateElements(arr) {
    let sum = 0;
    let inverseSum = 0;
    let string = '';
    for (let el of arr) {
        sum += el;
        inverseSum += 1 / el;
        string += el;
    }
    console.log(sum);
    console.log(inverseSum);
    console.log(string);
}