example/index.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <!-- <link rel="icon" type="image/svg+xml" href="/vite.svg" /> -->
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>MQTT</title>
  </head>
  <body>
    <div id="app">
      <button id="btn">停止</button>
    </div>
    <script type="module">
      import Mqtt from '/dist/index.esm.js';
      const host = '127.0.0.1';
      const port = 1883;
      const client = new Mqtt(`ws://${host}:${port}/mqtt`, {
        clientId: 'iot_' + Math.random().toString(16).substr(2, 8),
        username: 'admin',
        password: '123456',
      });
      client.connect();
      function updateData(data) {
        console.log(data);
      }
      client.subscribe('/node/test', updateData);
      window.onload = function () {
        const btn = document.querySelector('#btn')
        btn.onclick = function () {
          client.unsubscribe('/node/test', updateData);
        }   
      }
    </script>
  </body>
</html>