代码示例:(标识:jsck_class)
<!DOCTYPE html>
<html>
<body>

<h2>JavaScript 类</h2>

<p>在这个例子中,我们演示了一个简单的类定义以及如何使用它。</p>

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

<script>
class Car {
  constructor(brand) {
    this.carname = brand;
  }
}

mycar = new Car("Tesla");

document.getElementById("demo").innerHTML = mycar.carname;
</script>

</body>
</html>
运行结果: