Initial data commit

Task/Palindrome-detection/JavaScript/palindrome-detection-1.js

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+function isPalindrome(str) {
+  return str === str.split("").reverse().join("");
+}
+
+console.log(isPalindrome("ingirumimusnocteetconsumimurigni"));

Task/Palindrome-detection/JavaScript/palindrome-detection-2.js

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+var isPal = str => str === str.split("").reverse().join("");

Task/Palindrome-detection/JavaScript/palindrome-detection-3.js

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+(() => {
+
+    // isPalindrome :: String -> Bool
+    const isPalindrome = s => {
+        const cs = filter(c => ' ' !== c, s.toLocaleLowerCase());
+        return cs.join('') === reverse(cs).join('');
+    };
+
+
+    // TEST -----------------------------------------------
+    const main = () =>
+        isPalindrome(
+            'In girum imus nocte et consumimur igni'
+        )
+
+    // GENERIC FUNCTIONS ----------------------------------
+
+    // filter :: (a -> Bool) -> [a] -> [a]
+    const filter = (f, xs) => (
+        'string' !== typeof xs ? (
+            xs
+        ) : xs.split('')
+    ).filter(f);
+
+    // reverse :: [a] -> [a]
+    const reverse = xs =>
+        'string' !== typeof xs ? (
+            xs.slice(0).reverse()
+        ) : xs.split('').reverse().join('');
+
+    // MAIN ---
+    return main();
+})();