[https://developer.mozilla.org/zh-CN/docs/Web/API/CustomEvent](https://developer.mozilla.org/zh-CN/docs/Web/API/CustomEvent) ~~~js // 添加一个适当的事件监听器 obj.addEventListener("cat", function(e) { process(e.detail) }) // 创建并分发事件 var event = new CustomEvent("cat", {"detail":{"hazcheeseburger":true}}) obj.dispatchEvent(event) ~~~