- Node.js 有多个内置的事件,我们可以通过引入 events 模块,并通过实例化 EventEmitter 类来绑定和监听事件
// 导入events模块var events = require('events');// 创建eventEmitter对象var eventEmitter = new events.EventEmitter();var connectHandler = function connected() { console.log('链接成功。'); eventEmitter.emit('data_received');}// 监听事件[绑定事件]eventEmitter.on('connection', connectHandler);eventEmitter.on('data_received', function () { console.log('数据接收成功。');});// 触发事件eventEmitter.emit('connection');console.log("程序执行完毕。");