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原文鏈接
http://www.litotes.demon.co.uk/js_info/private_static.html
期待簡譯。

有一些代碼，整得有些過了，但還是很值得參考。在jct的代碼中看到了類似的用法。
在js中隱藏變量還是有必要的，否則和其他的js庫沖突，就會很麻煩，很難找到bug。

貼幾段代碼，明白人都看得懂。

var MyObject = (function(){/*private static (class) member*/var counter = 0;/*private static method.*/function incrementCounter(){return counter++;};/*class constructor.*/function constructorFn(id){this.id = id;var self = this;/*call private static (class)method and assign the returnedindex to a private instance member.*/var index = incrementCounter();/*privileged instance method.*/this.getIndex = function(){return index;};};/*privileged static (class) method(a property of the constructor)*/constructorFn.getNoOfInsts = function(){return counter;};/*public instance method privaliged at theclass level*/constructorFn.prototype.pubInstMethod = function(){...};/*return the constructor.*/return constructorFn;})(); //simultaneously define and call (one-off)!/*public static  member*/MyObject.pubStatic = "anything"/*public instance member*/MyObject.prototype.pubInstVar = 8;

再來一段

var global = this;(function(){var classGroupMember = 3;function privateToClassGroup(){/*this method could be a utilitiyfor the classes in the group or usedas an internal object constructor.*/...};global.MyObject1 = function(){var privteStaticMember = 4;function privateStaticMethod(){...};function constructorFn(id){...};/*return the constructor.*/return constructorFn;}();  //simultaneously define and call!global.MyObject2 = function(){function constructorFn(id){...};/*return the constructor.*/return constructorFn;}();  //simultaneously define and call!global.MyObject3 = function(){function constructorFn(id){...};/*return the constructor.*/return constructorFn;}();  //simultaneously define and call!})();  //simultaneously define and call!

再來一段：