1 var ws = new WebSocket(‘ws://echo.websocket.org/‘);
 2 
 3         ws.onopen = function()
 4         {
 5             ws.send(‘ok‘);
 6         };
 7 
 8     ws.onmessage = function(evt)
 9 
10     {
11 
12         console.log(evt.data)
13 
14     };
15 
16     ws.onclose = function(evt)
17 
18     {
19 
20         console.log(断开);
21 
22     };
23 
24     ws.onerror = function(evt)
25 
26     {
27 
28         console.log(‘错误‘);
29 
30     };