浏览器端是否有任何在nodejs中具有类似逻辑的EventEmitter? [英] Is there any EventEmitter in browser side that has similar logic in nodejs?

问题描述

在node.js中使用eventEmitter很容易:

It is so easy to use eventEmitter in node.js:

var e = new EventEmitter();
e.on('happy', function(){console.log('good')});
e.emit('happy');

浏览器本机中的任何客户端EventEmitter吗?

Any client side EventEmitter in browser native?

推荐答案

在现代浏览器中，存在EventTarget.

In modern browsers, there is 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:

• Maga Zandaqo在此处提供了出色的详细指南: MDN有一些文档: https://developer.mozilla.org/zh-CN/docs/Web/API/EventTarget

  MDN has some documentation: https://developer.mozilla.org/en-US/docs/Web/API/EventTarget

  针对Safari和其他无法运行的浏览器的填充: https://github.com/ungap/event-target

  Polyfill for Safari and other incapable browsers: https://github.com/ungap/event-target

  这篇关于浏览器端是否有任何在nodejs中具有类似逻辑的EventEmitter?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！