Object is used by Prototype as a namespace; that is, it just keeps a few new methods together, which are intended for namespaced access (i.e. starting with “Object.”). 上面说的namespace个人理解就相当于C#中的静态类，提供工具函数的意思，和C#中的namespace应该不是一个概念。因为C#中的命名空间后面不会直接跟方法，