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Home > List of blog posts > 构造函数 及向构造函数内添加原型属性 2019年7月10日 PHP学习第八课
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构造函数 及向构造函数内添加原型属性 2019年7月10日 PHP学习第八课
Johnson的博客
Original
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构造函数，说通俗一点就是建立一个大商场，有摊位卖商品，其他人可以进商场在这个摊位上卖，也可以自己摆摊卖，还可以自己摆摊拿其他摊位上的商品卖！卖的商品就是属性，摊位就是函数

代码实例如下：

实例

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>构造函数</title>
</head>
<body>
<script>
    var CreatObj = function () {
        this.itemnumber = 8;
        this.price = 20 ;
        this.money = function (itemnumber,price) {
            return itemnumber * price ;
        };
    };
    var obj1 = new CreatObj();

    console.log(obj1.itemnumber);
    console.log(obj1.price);
    console.log(obj1.money(obj1.itemnumber , obj1.price));

    CreatObj.prototype.price2 = 50 ;
    CreatObj.prototype.money2 = function (itemnuber,price2) {
        return itemnuber*price2 ;
        };

    var obj2 = new CreatObj();

    console.log(obj2.price);
    console.log(obj2.price2);
    console.log(obj2.itemnumber);
    console.log(obj2.money(obj2.itemnumber , obj2.price));
    console.log(obj2.money(obj2.itemnumber , obj2.price2));
    console.log(obj2.money2(obj2.itemnumber , obj2.price));
        console.log(obj2.money2(obj2.itemnumber , obj2.price2));


</script>
</body>
</html>

运行实例 »

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Correction status：qualified

Teacher's comments：你的案例不错, 很形象
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