WebSocket 相关知识

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);