var EventEmitter = require('events').EventEmitter;?var event = new EventEmitter();?event.on('some_event', function() {?? ? console.log('some_event 事件觸發(fā)');?});?setTimeout(function() {?? ? event.emit('some_event');?}, 1000);?
請解釋一下 event.emit('some_event'); console.log('some_event 事件觸發(fā)'); 這一類代碼都是什么意思
慕粉3986391
2017-12-25 23:18:50