菜鸟教程在线编辑器

AI 编程工具
 
                <!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(runoob.com)</title>
</head>
<body>

<h2>JavaScript Class Gettter/Setter</h2>

<p>很多开发者在属性名称前使用下划线字符 _ 将 getter/setter 与实际属性分开。</p>

<p id="demo"></p>

<script>
class Runoob {
  constructor(name) {
    this._sitename = name;
  }
  get sitename() {
    return this._sitename;
  }
  set sitename(x) {
    this._sitename = x;
  }
}
 
let noob = new Runoob("菜鸟教程");
 
document.getElementById("demo").innerHTML = noob.sitename;

</script>

</body>
</html>
              