lovecoding
/
vipAllDay


			
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">

    </div>
    <script src="./vue.js"></script>
    <script>
        let num = 10;
        let obj = {
            name: '小明',
            sex: '男'
        }
        // target 代理的目标对象
        // name 代理/监听 对象属性
        // property 执行的代码块
        // getter / setter
        Object.defineProperty(obj,'age',{
            get() {
                console.log("读取");
                return num;
            },
            set(value) {
                console.log("写入")
                num = value
            }
        })

        console.log(obj.age)
        obj.age = 20;
        console.log(obj)


        // var vm = new Vue({
        //     el: "#app",
        //     data: {
        //         msg: "哈哈哈"
        //     }
        // })
    </script>
</body>
</html>