JavaScript之面向对象中的多态

function Cat(){
	this.eat = '肉';
}
function Tiger(){
	this.color = '黑黄相间';
}
function Cheetah(){
	this.color = '报文';
}
function Lion(){
	this.color = '土黄色';
}
Tiger.prototype =  Cheetah.prototype = Lion.prototype = new Cat();//共享一个祖先 Cat
var T = new Tiger();
var C = new Cheetah();
var L = new Lion();
console.log(T.color);
console.log(C.color);
console.log(L.color);
console.log(T.eat);
console.log(C.eat);
console.log(L.eat);