<!DOCTYPE html>
<html>
<body>
<p>Click the button to get every element in the array that has a value of 18 or more.</p>
<button onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
var ages = [32, 33, 16, 40];
function checkAdult(age) {
return age >= 18;
}
function myFunction() {
document.getElementById("demo").innerHTML = ages.filter(checkAdult);
}
</script>
</body>
</html>