摘要：
point about inherit: 1：subclass can get SuperClass`s message 2：subclass rewrite SuperClass`s message 3：many subclass Share a piece of memory the inher 阅读全文
摘要：
1：create Object 2：create function 3：create a rule：all instance must have __proto__, and it reference to Father's prototype 4：create a rule：the prototy 阅读全文