js 继承的一个例子
<script type="text/javascript"> function Animal(){ this.species = "动物"; this.action = function(){alert("会跑");}; } function Cat(name,color){ this.name = name; this.color = color; } function Cat(name,color){ Animal.apply(this,arguments); this.name = name; this.color = color; } var cat1 = new Cat("大毛","黄色"); alert(cat1.action()); </script>