Another update from ingydotnet^djgoku

Task/100-doors/JavaScript/100-doors-9.js

@@ -0,0 +1,18 @@
+(function () {
+
+  return rng(1, 100).filter(
+    function (x) {
+      var root = Math.sqrt(x);
+
+      return root === Math.floor(root);
+    }
+  );
+
+  // rng(1, 20) --> [1..20]
+  function rng(m, n) {
+    return Array.apply(null, Array(n - m + 1)).map(function (x, i) {
+      return m + i;
+    });
+  }
+
+})();