数组有四种定义的方式
使用构造函数：
var a = new Array();
var b = new Array(10);
var c = new Array(“first”, “second”, “third”);
或者数组直接量：
var d = [“first”, “second”, “third”];
扩展：
function ObjStory(id,biaoti,author,type) //声明对象
{
this.ID = id;
this.Biaoti= biaoti;
this.Author= author;
this.Type =
