~~~ // 1.引入事件模块 const events = require('events'); // 2.创建eventEmitter对象 var eventEmitter = new events.EventEmitter(); // 3.创建事件处理程序,绑定connection事件处理程序 var connect = function(){ console.log("连接成功") } eventEmitter.on("connection",connect); //4.触发事件 eventEmitter.emit("connection") console.log("程序执行完毕") ~~~