proxy

const obj = {
    name: 'copyer',
    age: 12,
}

const objProxy = new Proxy(obj, {
    get: function (target, key, receiver) {
        console.log('get捕获器')
        return Reflect.get(target, key)
    },
    set: function (target, key, newValue, receiver) {
        console.log('set捕获器')
        return Reflect.set(target, key, newValue)
    },
    has: function (target, key) {
        console.log('has捕获器')
        return Reflect.has(target, key)
    },
    deleteProperty: function (target, key) {
        console.log('deleteProperty捕获器')
        return Reflect.deleteProperty(target, key)
    },
    getPrototypeOf: function (target) {
        console.log('getPrototypeOf捕获器')
        return Reflect.getPrototypeOf(target)
    },
    setPrototypeOf: function (target, newObj) {
        return Reflect.setPrototypeOf(target, newObj)
    },
    isExtensible: function (target) {
        console.log('isExtensible捕获器')
        return Reflect.isExtensible(target)
    },
    preventExtensions: function (target) {
        console.log('preventExtensions捕捉器')
        return Reflect.preventExtensions(target)
    },
    getOwnPropertyDescriptor: function (target, key) {
        console.log('getOwnPropertyDescriptor捕捉器')
        return Reflect.getOwnPropertyDescriptor(target, key)
    },
    defineProperty: function (target, key, obj) {
        console.log('defineProperty捕捉器')
        return Reflect.defineProperty(target, key, obj)
    },
    ownKeys: function (target) {
        console.log('ownKeys捕捉器')
        return Reflect.ownKeys(target)
    },
})