socket.io-tutorial/index.html at master · Robfz/socket.io-tutorial · GitHub

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<!DOCTYPE html>
<html>
  <head>
    <title>Socket.IO chat</title>
    <style>
      * { margin: 0; padding: 0; box-sizing: border-box; }
      body { font: 13px Helvetica, Arial; }
      form { background: #000; padding: 3px; position: fixed; bottom: 0; width: 100%; }
      form input { border: 0; padding: 10px; width: 90%; margin-right: .5%; }
      form button { width: 9%; background: rgb(130, 224, 255); border: none; padding: 10px; }
      #messages { list-style-type: none; margin: 0; padding: 0; }
      #messages li { padding: 5px 10px; }
      #messages li:nth-child(odd) { background: #eee; }
      .nickname-container { background-color: #000000; color: rgb(130, 224, 255); padding: 5px }
    </style>
    <script src="/socket.io/socket.io.js"></script>
    <script>

      var socket = io();

      var sendMessage = function () {
        var message = document.getElementById('message').value;
        var nickname = document.getElementById('nickname').value;
        if (message && nickname) {
          var payload = { 'message': message, 'nickname': nickname };
          console.debug('About to send ', payload);
          socket.emit('chat message', payload);
          document.getElementById('message').value = '';
        }
      }

      socket.on('chat message', function(payload){
        var node = document.createElement("li");
        var text = document.createTextNode(payload.nickname + ': ' + payload.message);
        node.appendChild(text);
        document.getElementById('messages').appendChild(node);
      });

    </script>
  </head>
  <body>
    <div class="nickname-container">
      Nickname <input type="text" id="nickname">
    </div>
    <ul id="messages"></ul>
    <form action="javascript:sendMessage()">
      <input id="message" autocomplete="off" /><button>Send</button>
    </form>
  </body>
</html>