<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>javascript创建对象的不同方式</title>
<script>
// 1. 工厂模式:缺点是实例无法追踪到对象
function person(name,age){
var obj = new Object();
obj.name = name;
obj.age = age;
obj.sayHi = function(){
alert("sayHi"+obj.name);
}
return obj;
}
var p1 = person("lili",25)
p1.sayHi();
console.log(p1.sayHi());
// 2. 构造函数模式：解决实例追踪对象的问题
function Dog(name,eat){
this.name = name;
this.eat = eat;
this.food = function(){
console.log(this.eat);
}
}
// 3. 原型创建对象：节省空间，共享数据
function Animal(name){
this.name =name;
}
Animal.prototype.eat = function(){
console.log(this.name+"吃饭了");
}
var a = new Animal("小黑");
a.eat();
</script>
</head>
<body>
</body>
</html>
