尚硅谷vue课程之Object.defineProperty 

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <script src="https://cdn.jsdelivr.net/npm/vue@2.7.10/dist/vue.js"></script>
    <title>Document</title>
</head>

<body>
    <script type="text/javascript">
        Vue.config.productionTip = false;
        let number = 888
        let person = {
            name: "老铁",
            sex: "男"
        }
        Object.defineProperty(person, 'age', {
            // value: 666,
            // enumerable:true, //控制属性是否可以枚举，默认值是false
            // writable:true, //控制属性是否可以被修改，默认值是false
            // configurable:true //控制属性是否可以被删除，默认值是false

            get() {
                console.log('读取age...')
                return number
            },

            set(value) {
                console.log('写入age...')
                number = value
            }
        })

        console.log(person)
    </script>
</body>

</html>

 

posted @ 2022-11-17 15:40  每日一小步  阅读(29)  评论(0)    收藏  举报