no-closure.js

// From: http://stackoverflow.com/questions/61552/are-there-legitimate-uses-for-javascripts-with-statement

for (var i=0; i<3; ++i)
{
   // object members introduced in this statement 
   // are scoped to the block following it.
   with ({num: i})
   {
      setTimeout(function() { alert(num); }, 10);
   }
}