// 声明一个全局对象Namespace，用来注册命名空间
Namespace = new Object();
// 全局对象仅仅存在register函数，参数为名称空间全路径，如"Grandsoft.GEA"
Namespace.register = function(fullNS)
{// 将命名空间切成N部分, 比如Grandsoft、GEA等var nsArray = fullNS.split('.');var sEval = "";var sNS = "";for (var i = 0; i < nsArray.length; i++){if (i != 0) sNS += ".";sNS += nsArray[i];// 依次创建构造命名空间对象（假如不存在的话）的语句// 比如先创建Grandsoft，然后创建Grandsoft.GEA，依次下去sEval += "if (typeof(" + sNS + ") == 'undefined') " + sNS + " = new Object();"}if (sEval != "") eval(sEval);
}

// 注册命名空间Grandsoft.GEA, Grandsoft.GCM
Namespace.register("Grandsoft.GEA");
Namespace.register("Grandsoft.GCM");
// 在Grandsoft.GEA命名空间里面声明类Person
Grandsoft.GEA.Person = function(name, age)
{this.name = name;this.age = age;
}
// 给类Person添加一个公共方法show()
Grandsoft.GEA.Person.prototype.show = function()
{alert(this.name + " is " + this.age + " years old!");
}
// 演示如何使用类Person
var p = new Grandsoft.GEA.Person("yanglf", 25);
p.show();

eye = {namespace: function() {var a = arguments, o = null, i, j, d, rt;for (i = 0; i < a.length; ++i) {d = a[i].split(".");rt = d[0];eval('if (typeof ' + rt + ' == "undefined"){' + rt + ' = {};} o = ' + rt + ';');for (j = 1; j < d.length; ++j) {o[d[j]] = o[d[j]] || {};o = o[d[j]];}}}
};eye.namespace("eye", "eye.common", "eye.datePicker", "eye.selectCity", "eye.tab","eye.test");
eye.test={//测试命名空间show: function() {return "aaa";}
}
alert(eye.test.show());//命名空间

function ns(pkg){if (!pkg) {return null;}var o = {};var result = o;var arr = pkg.split('.');alert([arr[0]]);o = o[[arr[0]]] = {};var len = arr.length;for (var i = 1; i < len; i++) {o = o[arr[i]] = {};}return result;
}var pkg = ns("com.momo.test");
alert(pkg.com);