Another update from ingydotnet^djgoku

Task/Pangram-checker/JavaScript/pangram-checker-1.js

@@ -0,0 +1,12 @@
+function is_pangram(str) {
+    var s = str.toLowerCase();
+    // sorted by frequency ascending (http://en.wikipedia.org/wiki/Letter_frequency)
+    var letters = "zqxjkvbpygfwmucldrhsnioate";
+    for (var i = 0; i < 26; i++)
+        if (s.indexOf(letters.charAt(i)) == -1)
+            return false;
+    return true;
+}
+
+print(is_pangram("is this a pangram"));  // false
+print(is_pangram("The quick brown fox jumps over the lazy dog"));  // true