JavaScript静态变量

function Student(){
        this.name = "khan";  //去掉this和有this的区别
        this.info = function(){
            alert('info()');
        }
    }
    
    var student = new Student(); //创建Student对象student
    
    document.write("对象形式1: "+student.name); 
    
    Student.name = "test";   //声明静态变量

    document.write("静态访问1："+Student.name);
    var student2 = new Student(); //创建Student对象student2 
    document.write("对象形式2: "+student2.name); 
    
    document.write("全局变量："+name);

1、去掉this后，name为全局变量以对象的形式将不能访问到name的值

2、静态变量不属于类的某个实例对象所独有的属性,为对象的共享

http://www.growup-diary.com/javascript-static-variables.html