another cool example of closure

returnClosure2.js

function outerFunction(x) {
  var z = 3;
  return function (y) {
    x=x+1;//x++
    alert(x + y + z);
  }
}
var myVal = 2;
var innerFunction = outerFunction(myVal); // innerFunction is now a closures.
innerFunction(10); //will alert 16
innerFunction(10); //will alert 17
innerFunction(10); //will alert 18