html运行实例（js_class_method

代码示例：（标识：js_class_method_2）

<!DOCTYPE html>
<html>
<body>

<h1>JavaScript 类方法</h1>

<p>将参数传递给 "age()" 方法。</p>

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

<script>
class Car {
  constructor(name, year) {
    this.name = name;
    this.year = year;
  }
  age(x) {
    return x - this.year;
  }
}

let date = new Date();
let year = date.getFullYear();

let myCar = new Car("Ford", 2014);
document.getElementById("demo").innerHTML=
"My car is " + myCar.age(year) + " years old.";
</script>

</body>
</html>