JavaScript 정의 클래스 나 함수 의 몇 가지 방식 소결

 
//定义 
function createCar() { 
var oCar = new Object(); 
oCar.color = "red"; 
oCar.doors = 4; 
oCar.showColor = function() { 
alert(this.color); 
} 
return oCar; 
} 
//调用 
var ocar1 = createCar(); 
var ocar2 = createCar(); 
ocar1.color = "black"; 
ocar1.showColor(); 
ocar2.showColor(); 
</script> 

 
<script type="text/javascript"> 
//定义 
function Car(color, doors) { 
this.color = color; 
this.doors = doors; 
this.showColor = function() { 
alert(this.color); 
}; 
} 
//调用 
var car1 = new Car("red", 4); 
var car2 = new Car("blue", 4); 
car1.showColor(); 
car2.showColor(); 
</script> 

 
<script type="text/javascript"> 
//定义 
function Car() { 
}; 
Car.prototype.color = "red"; 
Car.prototype.doors = 4; 
Car.prototype.drivers = new Array("Tom", "Jerry"); 
Car.prototype.showColor = function() { 
alert(this.color); 
} 
//调用： 
var car1 = new Car(); 
var car2 = new Car(); 
car1.showColor(); 
car2.showColor(); 
alert(car1.drivers); 
car1.drivers.push("stephen"); 
alert(car1.drivers); //结果：Tom,Jerry,stephen 
alert(car2.drivers); //结果：Tom,Jerry,stephen 
//可以用json方式简化prototype的定义: 
Car.prototype = 
{ 
color: "red", 
doors: 4, 
drivers: ["Tom", "Jerry",'safdad'], 
showColor: function() { 
alert(this.color); 
} 
}</script> 

 
<script type="text/javascript"> 
//定义 
function Car(color,doors) 
{ 
this.color=color; 
this.doors=doors; 
this.drivers=new Array("Tom","Jerry"); 
} 
Car.prototype.showColor=function(){ 
alert(this.color); 
} 
//调用： 
var car1=new Car('red',4); 
var car2=new Car('blue',4); 
car1.showColor(); 
car2.showColor(); 
alert(car1.drivers); 
car1.drivers.push("stephen"); 
alert(car1.drivers); //结果：Tom,Jerry,stephen 
alert(car2.drivers); //结果：Tom,Jerry 
alert(car1 instanceof Car); 
</script> 

 
class Car //class 
{ 
public string color = "red"; 
public int doors = 4; 
public int mpg = 23; 
public Car(string color, int doors, int mpg) //constructor 
{ 
this.color = color; 
this.doors = doors; 
this.mpg = mpg; 
} 
public void showColor() //method 
{ 
Console.WriteLine(this.color); 
} 
} 

 
<script type="text/javascript"> 
//定义 
function Car() { 
this.color = "red"; 
this.doors = 4; 
this.drivers = new Array("Tom", "Jerry"); 
if (typeof Car._initialized == "undefined") { 
Car.prototype.showColor = function() { 
alert(this.color); 
} 
//............ 
} 
//最后定义 
Car._initialized = true; 
} 
</script> 

 
function Car() { 
var oTempCar = new Object(); 
oTempCar.color="red"; 
oTempCar.doors=4; 
oTempCar.mpg=23; 
oTempCar.showColor = function() { 
alert(this.color); 
} 
return oTempCar; 
} 

 
//ps 
//static class (1:function) 
var CarCollection = new function() { 
var _carCollection = new Array(); //global,private 
this.Add = function(objCar) { 
alert('Add'); 
} 
this.Get = function(carid) { 
alert('Get'); 
} 
} 
//static class (2:json) 

var Car = { 
color: 'red', 
doors: 4, 
showColor: function() { alert(this.color); } 
} 
Car.showColor();