fruitstand/examples/nodejs-mongodb-angularjs-web-development/ch04/callback_closure.js

fruit stand

function logCar(logMsg, callback){
  process.nextTick(function() {
    callback(logMsg);
  });
}
var cars = ["Ferrari", "Porsche", "Bugatti"];
for (var idx in cars){
  var message = "Saw a " + cars[idx];
  logCar(message, function(){
    console.log("Normal Callback: " + message);
  });
}
for (var idx in cars){
  var message = "Saw a " + cars[idx];
  (function(msg){
    logCar(msg, function(){
      console.log("Closure Callback: " + msg);
    });
  })(message);
}