<title>Coolpy7 mqttjs client demo</title>
<script src="https://raw.githubusercontent.com/Coolpy7/mqttjs_browser_client_demo/master/lib/browserMqtt.js"></script>
connectTimeout: 5000, // 超时时间
clientId: 'cp7-clientid-websocket',
username: 'cp7-username-websocket',
password: 'cp7-password-websocket',
const client = mqtt.connect('mqtt://127.0.0.1:8083', options)
client.on('connect', function () {
client.subscribe('coolpy/chatroom', function (err) {
//client.publish('presence', 'Hello mqtt')
client.on('reconnect', (error) => {
console.log('正在重连:', error)
client.on('error', (error) => {
console.log('连接失败:', error)
client.on('message', function (topic, message) {
console.log(message.toString())