filter()

.filter() = creates a new array by filtering out elements

let numbers = [1, 2, 3, 4, 5, 6, 7];
let evenNums = numbers.filter(isEven);
 
console.log(evenNums)
 
function isEven(element){
	return element % 2 === 0;
}

const ages = [16, 17, 18, 19, 20, 60]
const adults = ages.filter(isAdult);
 
console.log(adults)
 
function isAdult(element){
	return element >= 18;
}