OMGZui

class SandboxGlobalProxy {
  constructor(sharedState) {
    const iframe = document.createElement("iframe", { url: "about:blank" });
    iframe.style.display = "none";
    document.body.appendChild(iframe);
    
    const sandboxGlobal = iframe.contentWindow; 

    return new Proxy(sandboxGlobal, {
      has: (target, prop) => {

OMGZui

var foo = "foo1";

const ctx = {
  func: variable => {
    console.log(variable);
  }
};

function withedYourCode(code) {
  code = "with(shadow) {" + code + "}";

OMGZui

var foo = "foo1";

const ctx = {
  func: variable => {
    console.log(variable);
  },
  foo: "f1"
};

function veryPoorSandbox(code, ctx) {

OMGZui

window.document = null;
console.log(window.document); 
delete window.document
console.log(window.document);

OMGZui

ReflectDemo reflectDemo = new ReflectDemo();
(1)Class<ReflectDemo> reflectDemoClass = ReflectDemo.class;
(2)Class<?> aClass = Class.forName ("com.omgzui.springtransaction.transactiondemo.reflectdemo.ReflectDemo");
(3)Class<? extends Class> aClass = reflectDemoClass.getClass ();

OMGZui

public class ReflectDemo {
 public static void main (String[] args) throws IllegalAccessException, InstantiationException {
  proxyObject();
  newObject();
 }

 public static void newObject(){
  long startTime = System.currentTimeMillis ();
  int i;
  for (i = 0; i < 100000000; i++) {

OMGZui

ReflectDemo reflectDemo = new ReflectDemo();
(1)Class<ReflectDemo> reflectDemoClass = ReflectDemo.class;
(2)Class<?> aClass = Class.forName ("com.omgzui.springtransaction.transactiondemo.reflectdemo.ReflectDemo");
(3)Class<? extends Class> aClass = reflectDemoClass.getClass ();

OMGZui

const idol = {
  name: 'Tom',
  phone: 10086,
  price: 1000000
}

const agent = new Proxy(idol, {
  get: function(target) {
    return 'phone:10010';
  },

OMGZui

class Adapter {
  test() {
      return 'old';
  }
}
 
class Target {
  constructor() {
      this.adapter = new Adapter();
  }

OMGZui

function info(target) {
  target.prototype.name = 'Tom';
  target.prototype.age = 10;
}

@info
class Man {}

let man = new Man();
man.name;