What the scope?

gistfile1.js

function findHandler(err, docs) {
  if (!err) {
    // Return Success & JSON Content-type
    var length = docs.length;
    writeMeta(self.res,200,url,length);

    // Process results from Mongo
    docs.forEach(function(e,i,a) {
      //console.log(e,i,a);
      self.res.write(JSON.stringify(e)+'\n');
    });
    self.res.end('\n');
  } else {
    getHandlerError(self.res,url);
  }
}

// Normal passing
var func = function(findHandler) {
  console.log(findHandler);
};
func(findHandler);

// Wrapped
var func = (function(findHandler) {
  return function() {
    console.log(findHandler);
  };
})(findHandler);
func();

// Wrapped, again, but not immediately assigned.
var func = (function(findHandler) {
  return function() {
    console.log(findHandler);
  };
});
// Call the wrapper function and assign the handler.
var myFunc = func(findHandler);
// Finally call `console.log`
myFunc();