Question

JavaScript中怎么写自定义类和事件

Answer 1

js自定义类不太清楚，自定义事件 baidu下 js中的 CustomEvent 就可以，如下：

myElement.addEventListener("userLogin", function(e) {
console.info("Event is: ", e);
console.info("Custom data is: ", e.detail);
})
// First create the eventvar myEvent = new CustomEvent("userLogin", {
detail: {
username: "davidwalsh"
}
});// Trigger it!
myElement.dispatchEvent(myEvent);