Live Coding Closure Examples

closure.js

var money = 55.50;
var coffeeCost = 8.50;

var drinkCoffee = (function(){
  var cupsDrunk = 0;
  return function(){
    if( money >= coffeeCost ){
      money -= coffeeCost;
      cupsDrunk++;
    }
    return cupsDrunk; // return the value
  };
})();

var count;
count = drinkCoffee();  // 1
count = drinkCoffee();  // 2
count = drinkCoffee();  // 3
console.log( count );  // 3
console.log( money );  // 30