JS中创建自定义对象的方法

<script>
// 1.直接给对象扩充属性和方法;
var cat = {};
cat.name = '小白';
cat.color = 'blue';
cat.food = 'fish';
cat.skill = function () {
alert('喵喵~~~');
}
cat.skill();
//2.对象字面量
var cat2 = {
name: '小白',
color: 'blue',
food: 'fish',
skill: function () {
alert('喵喵~~~');
}
};
console.log(cat2.name);
//3.工厂方式
function cat4(n, c) {
var cat = {};
cat.name = n;
cat.color = c;
cat.food = 'fish';
cat.skill = function () {
alert('喵喵~~~');
}
return cat;
}
var cat5 = cat4('小白','red');
console.log(cat5.name);
console.log(cat5.color);
//4.构造函数方式
function Cat6(n,c) {
this.name = n;
this.color = c;
this.food = 'fish';
this.skill = function () {
alert('喵喵');
}
}
var cat7 = new Cat6('小黄','yellow');
console.log(cat7.name);
console.log(cat7.color);
//5.原型方式
function Cat8() {};
Cat8.prototype.name = '小白';
Cat8.prototype.color = 'white';
Cat8.prototype.food = 'fish';
Cat8.prototype.skill = function () {
alert('喵喵~~~');
}
var cat9 = new Cat8();
console.log(cat9.food);
//6.构造函数混合方式
function Cat(n, c) {
this.name = n;
this.color = c;
this.food = 'fish';
}
Cat.prototype.skill = function () {
alert('喵喵hahah~~~');
}
var cat10 = new Cat('红','red');
console.log(cat10.name);
cat10.skill();
</script>