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websocket.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>实时聊天</title>
<link rel="stylesheet" href="http://cdn.bootcss.com/bootstrap/3.3.0/css/bootstrap.min.css">
<link rel="stylesheet" href="websocket.css" />
</head>
<script>
var name = prompt('请输入您的名字');
var message;
function C(selector){
return document.querySelector(selector);
}
if(window.WebSocket){
var url = 'ws://localhost:3000';
var ws = new WebSocket(url);
ws.onopen = function(e){
C('#title').innerText = '连接成功';
}
ws.onerror = function(){
C('#title').innerText = '连接失败';
}
ws.onmessage = function(e){
var li = document.createElement('li');
li.innerText = e.data;
C('#list').appendChild(li);
if(!'Notification' in window ){
alert('不支持通知')
}else if(Notification.permission === 'granted'){
message == e.data?'':notice(e.data)
}else if(Notification.permission !== 'denied'){
Notification.requestPermission(function(permission){
if(permission === 'granted'){
message == e.data?'':notice(e.data)
}
})
}
}
ws.onclose = function(){
C('#title').innerText = '连接关闭';
}
function sendMsg(){
message = name +'： '+ document.querySelector('#msg').value;
ws.send(name +'： '+ document.querySelector('#msg').value);
}
function notice(msg){
var notification = new Notification('聊天室消息',{
body:msg,
icon:'blank_page_03.png'
})
notification.onclick = function(){
notification.close();
}
}
}else{
C('#title').innerText = '浏览器不支持';
}
</script>
<body>
<div class="container">
<div class="alert alert-success" role="alert" id="title"></div>
<ul id="list">
</ul>
<div>
<textarea class="form-control" id="msg" rows="3"></textarea>
<div class="content">
<button onclick="sendMsg()" type="button" class="btn btn-primary btn-block">发送</button>
</div>
</div>
</div>
</body>
</html>