代码示例:(标识:js_class_static_1)
<!DOCTYPE html>
<html>
<body>

<h1>JavaScript Class Static 方法</h1>

<p>static 方法是使用 "static" 关键字创建的,您只能在类本身上调用该方法。</p>

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

<script>
class Car {
  constructor(name) {
    this.name = name;
  }
  static hello() {
    return "Hello!!";
  }
}

let myCar = new Car("Ford");

//You can call 'hello()' on the Car Class:
document.getElementById("demo").innerHTML = Car.hello();

// But NOT on  a Car Object:
// document.getElementById("demo").innerHTML = myCar.hello();
// this will raise an error.
</script>

</body>
</html>
运行结果: