2016 Update

Task/Day-of-the-week/JavaScript/day-of-the-week-2.js

@@ -0,0 +1,21 @@
+(function () {
+    'use strict';
+
+    // isXmasSunday :: Integer -> Bool
+    function isXmasSunday(year) {
+        return (new Date(year, 11, 25))
+            .getDay() === 0;
+    }
+
+    // range :: Int -> Int -> [Int]
+    function range(m, n) {
+        return Array.apply(null, Array(n - m + 1))
+            .map(function (_, i) {
+                return m + i;
+            });
+    }
+
+    return range(2008, 2121)
+        .filter(isXmasSunday);
+
+})();