console.clear();

const obj = {};

​

const handler = {

  set(target, key, value) {

    console.log(`Setting value ${key} as ${value}`)

    target[key] = value;

  },

  get(target, key) {

    console.log(`Getting value of ${key}`);

    return target[key];

  },

  deleteProperty(target, key) {

    console.log(`Deleting ${key}`);

    delete target[key];

  }

};

​

const p = new Proxy(obj, handler);

p.a = 10;

p.c = 20;

p.a = 100;

delete p.a;

console.log(p.a);

console.log(p.c);