node EventEmitter

資深大佬 : TomVista 0

想在 event.emmit(‘eventName’) 执行完异步事件之后触发一个 end 事件,怎么做?

暴露 event 给 listener 吗?

const event = new (require('events').EventEmitter) event.on('name',(event)=>{  // dosomething     setTimeout(()=>{         ...         event.emmit('nameEnd')     },100)      })  event.on('nameEnd',()=>{  console.log(name) })  event.emmit('name',event)

大佬有話說 (1)

資深大佬 : JayLin1011

const EventEmitter = require(‘events’);

const event = new EventEmitter();

event.on(‘eventEnd’, () => {
console.log(‘異步事件執行後觸發 eventEnd 事件’);
});

event.on(‘eventAsync’, function () {
setImmediate(() => {
console.log(‘異步事件觸發’);
// to do…
this.emit(‘eventEnd’);
});
});

event.emit(‘eventAsync’);