vue笔记：object.definePropety

<script type="text/javascript">

        let number = 18
        let person = {
            name:'账单',
            sex:'男',
        }

        Object.defineProperty(person,'age',{
            get(){
                console.log('有人读取了age属性了')
                return number
            },

            set(value){
                console.log('有人修改了age属性，且值是', value)
                number = value
            }
        })
    </script>