如何继承EventTarget对象？

// 创建自定义类
function CustomEventTarget() {
  // 继承EventTarget对象的属性和方法
  EventTarget.call(this);
}

// 继承EventTarget对象的原型方法
CustomEventTarget.prototype = Object.create(EventTarget.prototype);

// 添加自定义方法
CustomEventTarget.prototype.customMethod = function() {
  console.log("This is a custom method.");
};

// 创建自定义事件目标对象
var customTarget = new CustomEventTarget();

// 添加事件监听器
customTarget.addEventListener("customEvent", function(event) {
  console.log("Custom event triggered:", event.detail);
});

// 触发自定义事件
var customEvent = new CustomEvent("customEvent", { detail: "Custom event data" });
customTarget.dispatchEvent(customEvent);

// 调用自定义方法
customTarget.customMethod();