jswartwood

// This should do a pretty good job of iterating through the following array
// and logging any values that == each other. Beware, this is scary stuff!
// http://benalman.com/news/2010/11/schrecklichwissen-terrible-kno/

var arr = [true, 123, {}, {a:1}, [], [0], [123], "hi", function foo(){},
  /re/, false, 0, "", null, undefined, NaN];

function pretty(v) {
  var s = JSON.stringify(v);
  return v == null ? v + "" : s === undefined ? v : s == "null" ? "NaN" : s;

jswartwood

Fibonacci Sequence

Classics series

Print the Fibonacci series (the first 10 values) separated by spaces. If you've ever taken a Computer Science class, you should be all over this one.