websocket html

<html>
<body>

    Welcome<br/>
    <input id="text" type="text" />
    <button onclick="send()">Send</button>
    <button onclick="closeWebSocket()">Close</button>
    <div id="message"></div>
    
</body>

<script type="text/JavaScript">
      var websocket = null;
      
      //判断当前浏览器是否支持WebSocket
      if('WebSocket' in window){
          websocket = new WebSocket("ws://localhost:8086/ws");
      }
      else{
          alert('Not support websocket');
      }    
      //连接发生错误的回调方法
      websocket.onerror = function(){
          setMessageInnerHTML("error");
      };     
      //连接成功建立的回调方法
      websocket.onopen = function(event){
          setMessageInnerHTML("open");
      };      
      //接收到消息的回调方法
      websocket.onmessage = function(){
          setMessageInnerHTML(event.data);
      };     
      //连接关闭的回调方法
      websocket.onclose = function(){
          setMessageInnerHTML("close");
      };       
      //监听窗口关闭事件，当窗口关闭时，主动去关闭websocket连接，防止连接还没断开就关闭窗口，server端会抛异常。
      window.onbeforeunload = function(){
          websocket.close();
      };       
      //将消息显示在网页上
      function setMessageInnerHTML(innerHTML){
          document.getElementById('message').innerHTML += innerHTML + '<br/>';
      } 
      //关闭连接
      function closeWebSocket(){
          websocket.close();
      }  
      //发送消息
      function send(){
          var message = document.getElementById('text').value;
          websocket.send(message);
      }
  </script>


</html>