function Dog(name, age) {  this.name = name;  this.age = age;  this.bark = function() {    this.name += " hello";    console.log(this.name);    (function() {      this.name += "a";      console.log(this.name);    })();  }};let dog = new Dog("tep", 2);dog.bark();誰(shuí)能告訴我這里發(fā)生了什么事嗎？當(dāng)我打開(kāi)控制臺(tái)時(shí)，它打印 2 行，分別是泰普你好A每次我重新加載頁(yè)面時(shí)，它都會(huì)繼續(xù)在第2行中添加“a”，并且我在窗口對(duì)象中看到，有屬性“name”泰普你好啊