WebSocket for JavaScript

WebSocket.js

var ws;
function ToggleConnectionClicked() {          
    try {
        ws = new WebSocket("ws://127.0.0.1:2000");//连接服务器        
        ws.onopen = function(event){alert("已经与服务器建立了连接\r\n当前连接状态："+this.readyState);};
        ws.onmessage = function(event){alert("接收到服务器发送的数据：\r\n"+event.data);};
        ws.onclose = function(event){alert("已经与服务器断开连接\r\n当前连接状态："+this.readyState);};
        ws.onerror = function(event){alert("WebSocket异常！");};
    } catch (ex) {
        alert(ex.message);      
    }
}

function SendData() {
    try{
        var content = document.getElementById("content").value;
        if(content){
            ws.send(content);
        }
        
    }catch(ex){
        alert(ex.message);
    }
}

function seestate(){
    alert(ws.readyState);
}