var module1 = (function () {
    var count = 0;
    var setcount = function (val) { count = val; };
    var getcount = function () { alert("count=" + count); };

    return {
        count: count,
        getcount: getcount,
        setcount: setcount
    };
})();

    module1.count = 100; 
    module1.getcount();     //0 
    alert(module1.count);   //100
    module1.setcount(200);
    module1.getcount();     //200
    alert(module1.count);   //100

本人前端薄弱，不明白为什么module1.count设置的不是module1内部count的值，请指点！或给出博文参考也行。谢谢！