Find largest number #vanillajs

getLargestNum.js

var numbers = [4, 44, 21, 29, 12, 7];

// Method 1: using Math.max
console.log( Math.max(...numbers) ); 

//Method 2: using reduce
var max = numbers.reduce(
    function(previousLargestNumber, currentLargestNumber) {
        return (currentLargestNumber > previousLargestNumber) ? currentLargestNumber : previousLargestNumber;
    }
);

console.log(max);


/*
	If you can use method 1, then use it.
	When we use the spread operator within Math.min / Math.max() it will expand, or spread out, our array and insert each variable as a separate parameter into Math.max()!
In other words: Math.max(...[1,2,3,4]) is the same as Math.max(1,2,3,4)


*/

helper.js

//as a helper function

const arrMax = arr => Math.max(...arr);
// arrMax([20, 10, 5, 10]) -> 20