JavaScript常用"类"构建方式
带有构造函数(原型方式)的"类":

function Student(name,gender,age){  this.name = name;  this.gender = gender;  this.age = age;  this.hobby = new Array();}Student.prototype.showHobbies = function(){  var hobbies = "";  for(var arg in this.hobby){    hobbies += (this.hobby[arg] + " ");  }  alert(this.name + "'s hobbies are "+hobbies);  hobbies = null;}var stu1 = new Student("Bob","male","24");var stu2 = new Student("Tina","female","23");stu1.hobby.push("basketball");stu1.hobby.push("football");stu2.hobby.push("music");stu2.hobby.push("dancing");stu2.hobby.push("reading");stu1.showHobbies();stu2.showHobbies();

动态原型: //与上例类似，只是方法也包含在"类"中，更符合视觉观点

function Student(name,gender,age){  this.name = name;  this.gender = gender;  this.age = age;  this.hobby = new Array();  if(typeof Student._initalized == "undefined")  {    Student.prototype.showHobbies = function(){    var hobbies = "";    for(var arg in this.hobby){      hobbies += (this.hobby[arg] + " ");    }    alert(this.name + "'s hobbies are "+hobbies);    hobbies = null;    }  }  Sutdent._initalized = ture;}