var msg = function(){

this.birthday = "2012-10-30";

};

jQuery.extend(msg,{name:"hello",age:28,email:"zhandx@163.com",info:function(){console.log("name:"+this.name+",age:"+this.age+",email:"+this.email);}});

msg.info();

output:

name:,age:28,email:zhandx@163.com