<!DOCTYPE html>
<html>
<head>
<title>JavaScript</title>
<script>
var ages = [10, 12, 19, 20];
document.write(ages + "<br><br>");
var b = ages.filter(checkAdult);
document.write(b + "<br>");
function checkAdult(age) {
return age >= 18;
}
</script>
</head>
<body>
</body>
</html>