js对象之寻址方式

var person={
firstname : "bill",
lastname  : "gates",
id        :  5566
};

寻址方式：

name=person.lastname;
name=person["lastname"];

例如：

<script> var person={ firstname : "bill", lastname : "gates", id : 5566 }; document.write(person.lastname + "
"); document.write(person["lastname"] + "
"); </script>

结果：

gates
gates