Initial data commit

Task/Pangram-checker/JavaScript/pangram-checker-2.js

@@ -0,0 +1,18 @@
+(() => {
+    "use strict";
+
+    // ----------------- PANGRAM CHECKER -----------------
+
+    // isPangram :: String -> Bool
+    const isPangram = s =>
+        0 === "abcdefghijklmnopqrstuvwxyz"
+        .split("")
+        .filter(c => -1 === s.toLowerCase().indexOf(c))
+        .length;
+
+    // ---------------------- TEST -----------------------
+    return [
+        "is this a pangram",
+        "The quick brown fox jumps over the lazy dog"
+    ].map(isPangram);
+})();