问题 I am using Pusher Channels and delivering messages like in their tutorial: https://pusher.com/docs/channels/getting_started/javascript Client: let pusher = new Pusher('APP_KEY', { cluster: 'APP_CLUSTER' }); let channel = pusher.subscribe('my-channel'); channel.bind('my-event', function(data) { alert('An event was triggered with message: ' + data.message); }); Server: // First, run 'npm install pusher' var Pusher = require('pusher'); var pusher = new Pusher({ appId: 'APP_ID', key: 'APP_KEY',