js定义类，你会吗？
<html>
<body>
<script language="javascript">
//代码一
var oCar=new Object;
oCar.color="red";
oCar.doors=4;
oCar.mpg=23;
oCar.showColor=function(){
alert(this.color);
};
//代码二function factory
function createCar(){
var oCar=new Object;
oCar.color="green";
oCar.doors=4;
oCar.mpg=23;
oCar.showColor=function(){
alert(this.color);
}
return oCar;
}
var oCar1=createCar();
var oCar2=createCar();
//代码三,所有对象都共享一个方法，每个创建新对象，都要创建新函数，而事实是对象共享一个方法
function createCar(sColor,iDoors,iMpg){
var oTempCar=new Object;
oTempCar.color=sColor;
oTempCar.idoors=iDoors;
oTempCar.impg=iMpg;
oTempCar.showColor=function(){
alert(this.color);
}
return oTempCar;
}
var oCar1=createCar("red",2,3);
var oCar2=createCar("green",3,5);
//代码四：
function showColor(){
alert(this.color)
}
function createCar(sColor,iDoors,iMpg){
var oTempCar=new Object;
oTempCar.color=sColor;
oTempCar.idoors=iDoors;
oTempCar.impg=iMpg;
oTempCar.showColor=showColor;
return oTempCar;
}
var oCar1=createCar("red",2,3);
var oCar2=createCar("green",3,5);
//代码五，使用混合的构造函数/原型方式来构造对象
function Car(sColor,iDoors,iMpg,){
this.color=sColor;
this.idoors=iDoors;
this.impg=iMpg;
this.drivers=new Array("Mike","Sussen");
}
Car.prototype.showColor=function(){
alert(this.color);
}
var oCar1=new Car("red",1,25);
var oCar2=new Car("green",2,23);
//代码六：动态原型方法
function Car(sColor,iDoors,iMpg,){
this.color=sColor;
this.idoors=iDoors;
this.impg=iMpg;
this.drivers=new Array("Mike","Sussen");
if(typeof Car._initialized=="undefined"){
Car.prototype.showColor(){
alert(this.color);
}
Car._initialized=true;
}
}
//这种是网友加上去的，好用不好用，主流不主流，自己看着弄吧。
var object = {
name:"name",
sex:"sex",
age:12
}
</script>
<body>
</html>