Map comparison

by Matthew Day

HTML

<div id="output"></div>

JavaScript

var output = document.getElementById('output');

var arr1 = [1, 2, 3, 4, 5, 6, 7, 8, 9];


// Option 1 with arrow function and no return
var map1 = arr1.map((number) => (
	number * 3
));

// Option 2 with function keywords, brackets, and return
//var map1 = arr1.map(function(number) {
//	return number * 3;
//});

console.log(map1);

output.innerHTML = map1;

// Both Option 1 and Option return the same result