WebSocket 相关知识

检测浏览器是否支持WebSocket

var WebSocketsExist = true;

            try {

                var dummy = new WebSocket("ws://localhost:8989/test");

            } catch (ex) {

                try

                {

                    webSocket = new MozWebSocket("ws://localhost:8989/test");

                }

                catch(ex)

                {

                    WebSocketsExist = false;

                }

            }



            if (WebSocketsExist) {

                // 支持

            } else {

                // 不支持

            }

第二种检测WebSocket支持情况的写法:

function IstSupportWebSocket() {

    if (window.WebSocket) {

        //supported

    } else {

        // not supported

    }

}

ws:// --- WebSocket连接

wss:// --- 安全的WebSocket连接

创建对象、连接服务器

url = "ws://localhost:8080/echo";



w = new WebSocket(url);