Data commit

Task/Day-of-the-week/JavaScript/day-of-the-week-1.js

@@ -0,0 +1,5 @@
+for (var year = 2008; year <= 2121; year++){
+    var xmas = new Date(year, 11, 25)
+    if ( xmas.getDay() === 0 )
+        console.log(year)
+}

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);
+
+})();

Task/Day-of-the-week/JavaScript/day-of-the-week-3.js

@@ -0,0 +1,31 @@
+(() => {
+    "use strict";
+
+    // main :: IO ()
+    const main = () => {
+        const
+            xs = enumFromTo(2008)(2121)
+            .filter(xmasIsSunday);
+
+        return (
+            console.log(xs),
+            xs
+        );
+    };
+
+
+    // xmasIsSunday :: Int -> Bool
+    const xmasIsSunday = year =>
+        (new Date(year, 11, 25))
+        .getDay() === 0;
+
+
+    // enumFromTo :: Int -> Int -> [Int]
+    const enumFromTo = m =>
+        n => Array.from({
+            length: 1 + n - m
+        }, (_, i) => m + i);
+
+    // MAIN ---
+    return main();
+})();

Task/Day-of-the-week/JavaScript/day-of-the-week-4.js

@@ -0,0 +1 @@
+[2011, 2016, 2022, 2033, 2039, 2044, 2050, 2061, 2067, 2072, 2078, 2089, 2095, 2101, 2107, 2112, 2118]