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var Calculator = function (eq) {
//这里可以声明私有成员
var eqCtl = document.getElementById(eq);
return {
// 暴露公开的成员
add: function (x, y) {
var val = x + y;
eqCtl.innerHTML = val;
}
};
};
var calculator = new Calculator('eq');
calculator.add(2, 2);
(function () {
// ... 所有的变量和function都在这里声明，并且作用域也只能在这个匿名闭包里
// ...但是这里的代码依然可以访问外部全局的对象
}());
(function () {/* 内部代码 */})();
(function ($, YAHOO) {
// 这里，我们的代码就可以使用全局的jQuery对象了，YAHOO也是一样
} (jQuery, YAHOO));
var blogModule = (function () {
var my = {}, privateName = "博客园";
function privateAddTopic(data) {
// 这里是内部处理代码
}
my.Name = privateName;
my.AddTopic = function (data) {
privateAddTopic(data);
};
return my;
} ());
var blogModule = (function (my) {
my.AddPhoto = function () {
//添加内部代码
};
return my;
} (blogModule));
var cnblogs = cnblogs || {} ;var blogModule = (function (my) {
// 添加一些功能
return my;
} (blogModule || {}));
var blogModule = (function (my) {
var oldAddPhotoMethod = my.AddPhoto;
my.AddPhoto = function () {
// 重载方法，依然可通过oldAddPhotoMethod调用旧的方法
};
return my;
} (blogModule));
var blogModule = (function (old) {
var my = {},
key;
for (key in old) {
if (old.hasOwnProperty(key)) {
my[key] = old[key];
}
}
var oldAddPhotoMethod = old.AddPhoto;
my.AddPhoto = function () {
// 克隆以后，进行了重写，当然也可以继续调用oldAddPhotoMethod
};
return my;
} (blogModule));
var blogModule = (function (my) {
var _private = my._private = my._private || {},
_seal = my._seal = my._seal || function () {
delete my._private;
delete my._seal;
delete my._unseal;
},
_unseal = my._unseal = my._unseal || function () {
my._private = _private;
my._seal = _seal;
my._unseal = _unseal;
};
return my;
} (blogModule || {}));
blogModule.CommentSubModule = (function () {
var my = {};
// ...
return my;
} ());