js类 混合的构造函数/原型模式
混合的构造函数/原型模式
联合使用构造函数和原型方式,定义类就非常方便。
<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>