}
}
var zfp = new Student("3zfp",100,"ShenZhen"); 代码执行后，将会报"找不到对象"的错误.意思是FormatName()未定义。
3、私有方法无法访问this指示的变量（公开变量），如下：
function Student(basicinfo)
{
this.basicInfo = basicinfo;
var FormatInfo = function()
{
this.basicInfo.name = this.basicInfo.name+".china";
}
FormatInfo();
}
function BasicInfo(name,age,from)
{
this.name = name;
this.age = age;
this.from = from;
}
var zfp = new Student(new BasicInfo("3zfp",100,"ShenZhen")); 执行代码后，系统将会提示 “this.basicInfo为空或不是对象”的错误。
基本结论是，私有方法只能访问私有属性，私有属性在声明并赋值后可以在类的任何地方访问，
实例变量：
实例变量即某个实例对象所拥有的变量。如：
function BasicInfo(name,age,from)
{
this.name = name;
this.age = age;
this.from = from;
}
var basicA = new BasicInfo("3zfp",100,"ShenZhen");
basicA.generalInfo = "is 3zfp owned object";
document.write("basicA's generalInfo is : "+ basicA.generalInfo+"<br>");
var basicB = new BasicInfo("zfp",100,"ShenZhen");
document.write("basicB's generalInfo is : "+ basicB.generalInfo+"<br>");
执行该代码后，我们将可以看到如下结果：
basicA's generalInfo is : is 3zfp owned object
basicB's generalInfo is : undefined 静态变量：
静态变量即为某个类所拥有的属性，通过 类名+"."+静态变量名 的方式访问该属性。如下可以做清晰的解释：
function BasicInfo(name,age,from)
{
this.name = name;
this.age = age;
this.from = from;
}
BasicInfo.generalInfo = "is 3zfp owned object";
var basic = new BasicInfo("zfp",100,"ShenZhen");
document.write(basic.generalInfo+"<br>");
document.write(BasicInfo.generalInfo+"<br>")；
BasicInfo.generalInfo = "info is changed";
document.write(BasicInfo.generalInfo+"<br>")；
执行以上代码，将会得到如下结果：
undefined
is 3zfp owned object
