在node.js中使用eventEmitter非常容易:
var e = new EventEmitter();
e.on('happy', function(){console.log('good')});
e.emit('happy');
浏览器原生的任何客户端EventEmitter?
在现代浏览器中,有EventTarget。
class MyClass extends EventTarget {
doSomething() {
this.dispatchEvent(new Event('something'));
}
}
const instance = new MyClass();
instance.addEventListener('something', (e) => {
console.log('Instance fired "something".', e);
});
instance.doSomething();
其他资源:
在客户端中创建自定义事件,并附加到dom元素:
var event = new Event('build');
// Listen for the event.
elem.addEventListener('build', function (e) { /* ... */ }, false);
// Dispatch the event.
elem.dispatchEvent(event);
这可以参考:https://developer.mozilla.org/en-US/docs/Web/Guide/Events/Creating_and_triggering_events感谢Naeem Shaikh
你需要一个JavaScript库,比如这个https://github.com/Olical/EventEmitter?