node.js-event的使用

/*
 * @Description: 描述
 * @Version: 1.0
 * @Autor: Nanke_南柯
 * @Date: 2021-11-02 20:24:28
 * @LastEditors: Nanke_南柯
 * @LastEditTime: 2021-11-02 20:30:03
 */

const EventEmitter = require('events')
class MyEventEmitter extends EventEmitter{}
const event =new MyEventEmitter()

event.on('play',(value)=>{
    console.log(value);
})

event.once('play2',(value)=>{
    console.log(value);
})

event.emit('play','movie')
event.emit('play2','tv')
event.emit('play2','tv')
event.emit('play2','tv')
event.emit('play2','tv')