Age calculator

Author: agarnung

_includes/landing.html

@@ -50,3 +50,4 @@ <h3 class="font-weight-bold">Hi! Welcome to my website</h3>
   }
 </style>
 
+<script src="{{ '/assets/js/age-calculator.js' | relative_url }}"></script>

assets/js/age-calculator.js

@@ -0,0 +1,13 @@
+function ageCalculator() {
+    var today = new Date();
+    var birthDate = new Date("2000-10-06"); // ISO-8601 format
+    var age = today.getFullYear() - birthDate.getFullYear();
+    var m = today.getMonth() - birthDate.getMonth();
+    if (m < 0 || (m === 0 && today.getDate() < birthDate.getDate())) {
+        age--;
+    }
+
+    document.querySelector("#age").innerHTML = age;
+}
+
+ageCalculator();