1function isOver18(dateOfBirth) {
2 // find the date 18 years ago
3 const date18YrsAgo = new Date();
4 date18YrsAgo.setFullYear(date18YrsAgo.getFullYear() - 18);
5 // check if the date of birth is before that date
6 return dateOfBirth <= date18YrsAgo;
7}
8
9isOver18(new Date("1999-12-01")); // true
10isOver18(new Date("2020-03-27")); // false