前端
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Index</title>
</head>
<body>
<h1>获得服务器更新</h1>
<div id="result"></div>
<script>
if (typeof (EventSource) !== "undefined") {
var source = new EventSource("/HTML5/tt");
source.onmessage = function (event) {
document.getElementById("result").innerHTML += event.data + "<br />";
};
}
else {
document.getElementById("result").innerHTML = "抱歉，您的浏览器不支持 server-sent 事件 ...";
}
</script>
</body>
</html>
后端
public class HTML5Controller : Controller { // // GET: /HTML5/ public ActionResult Index() { return View(); } public void tt() { Response.ContentType = "text/event-stream"; Response.Expires = -1; Response.Write("data: " + DateTime.Now.ToString() + " ");//注意结束要两个 Response.Flush(); } }