FizzBuzz. For laughs after I read this article http://www.kalzumeus.com/2011/10/28/dont-call-yourself-a-programmer/, that referenced http://www.codinghorror.com/blog/2007/02/why-cant-programmers-program.html.

FizzBuzz.js

(function(){
   // FizzBuzz
   for(var i=1; i<=100; i++) {
      var fizz = (i % 3 == 0 ? "fizz" : "") + (i % 5 == 0 ? "buzz" : "");
      console.log(fizz == "" ? i : fizz);
   }
})();