Define a function findLargestNumber() that takes an argument from a list of numbers as and returns the largest of them. Use the if condition to get the largest number from the list.

largestNumber.js

// Define a function findLargestNumber() that takes an argument
// from a list of numbers as and returns the largest of them.
// Use the if condition to get the largest number from the list.
// https://jsfiddle.net/3v3LoLrp/

function findLargestNumber(numbers){
    var largestNum = 0 ;
    for (var i = 0; i <= numbers.length; i++){
        if (numbers[i] > largestNum){
            largestNum = numbers[i];
        }
    }
    return largestNum;
}

console.log(findLargestNumber([74, 39, 88, 57, 29, 17, 55, 72]));