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vue2-feature-02

vue2-feature

vue1017
/
defineProperty.html

<!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">
    <title>Document</title>
</head>
<body>
    <script>
        const obj={
            name:"zhang",
            age:20
        }
        Object.defineProperty(obj,'info',{
            get(){
                console.log(this,"getter");
                return obj.name+"-"+obj.age
            },
            set(value){
                console.log(value,"setter");
                const m=value.split("-")
                this.name=m[0]
                this.age=m[1]
            }
        })

        console.log(obj.name,obj.age,obj.info);
        console.log(obj);
        obj.info="lisi-23"
        console.log(obj.name,obj.age,obj.info,'修改info');
        obj.age=33//只有修改info的值得时候才会调用setter
        console.log(obj.info,'修改age');

    </script>

</body>
</html>