“alert” is not defined when running www.jshint.com

Question

I fixed this by simply adding var alert; However, is this what I should be doing to get the pesky error message to go away? Here is the fix. Here is the fail

Answer 1

function prod(arr) {
    let largest = 0;
    let secondLargest = 0;
    const len = arr.length;
    for (let i = 0; i < len; i++) {
        if (arr[i] > largest) {
            secondLargest = largest;
            largest = arr[i];
        }
        else if (arr[i] < largest && arr[i] > second_largest) {
            secondLargest = arr[i]
        }
    }
    return largest * secondLargest;
}

console.log(prod([2, 4, 7, 8]));