Closures

My previous understand of Closures is bad.

Derek Greer's is much better.

Some of his code:

var createGreeting = function(greeting) {

   return function (name) {

      document.write(greeting + ', ' + name + '.');

   };

};

   

helloGreeting = createGreeting("Hello");

howdyGreeting = createGreeting("Howdy");

helloGreeting("John"); helloGreeting("Sally"); howdyGreeting("John"); howdyGreeting("Sally");

// Hello, John. // Hello, Sally. // Howdy, John. // Howdy, Sally