HTML5: Your visual blueprint™ for designing rich web pages and applications

CREATE A WEBSOCKET CLIENT

To connect to a WebSocket service running on a web server, you will need to create a WebSocket client that runs on the user’s web browser that supports the WebSockets API.

Before initializing a connection, you will need to verify if the browser supports the WebSocket API by testing for the window.WebSocket object. If it exists, you can establish the connection to a WebSocket service using a ws://hostname/path URL:

if ( 'WebSocket' in window ) {
   var websocket = new WebSocket(wsURL);

The returned object is then used to register an event listener for each of the four event types, open, close, message, and error:

websocket.addEventListener(eventtype, function, false);

Each event handler function will receive an ...