sigletonパターン勉強1

gistfile1.js

//引用http://addyosmani.com/resources/essentialjsdesignpatterns/book/
var Singleton = (function(){
    var instantiated;
    function init (){
        // singleton here
        return {
            publicMethod: function(){
                console.log( 'hello world' );
            },
            publicProperty: 'test'
        };
    }

    return {
        getInstance: function(){
            if ( !instantiated ){
                instantiated = init();
            }
            return instantiated; 
        }
    };
})();
// calling public methods is then as easy as:
Singleton.getInstance().publicMethod();