web connect new send ESS .org ebs conn received

<script> 　　var ws = new WebSocket("wss://echo.websocket.org");
　　ws.onopen = function(evt) { 　　console.log("Connection open ..."); 　　　　ws.send("Hello WebSockets!"); 　　};
　　ws.onmessage = function(evt) { 　　　　console.log( "Received Message: " + evt.data); 　　　　ws.close(); 　　};
　　ws.onclose = function(evt) { 　　　　console.log("Connection closed."); 　　};
</script>

初識WebSocket