js 破解之补浏览器环境的两种监控方式

本文由简悦 SimpRead 转码，原文地址 mp.weixin.qq.com

1，首先要说的肯定是 Proxy 了，介绍就不说了，直接上代码：

window = new Proxy(global, {
    get: function (target, key, receiver) {
        console.log("window.get", key, target[key]);
        if (key=="location"){
            location = new Proxy(target[key], {
                get: function (_target, _key, _receiver) {
                    console.log("window.get", key, _key, _target[_key]);
                    if (_key=="port"){console.log("关注公众号【妄为写代码】")}
                    return _target[_key];
                }
            })
        }
        return target[key];
    },
    set: function (target, key, value, receiver) {
        console.log("window.set", key, value);
        target[key] = value;
    }
});
window.a = {};
window.a;
window.location = {a: 2};
window.location.a;
window.b = {a: 2};
window.b.a;
location.port;
console.log("--------------");
window.location.port;

node 环境执行结果：