要在HTML5中处理服务器发送的事件，您可以尝试运行以下代码：
<!DOCTYPE HTML>
<html>
<head>
<script>
document.getElementsByTagName("eventsource")[0].addEventListener("server-time", eventHandler, false);
function eventHandler(event)
{
//服务器发送的警报时间
document.querySelector('#ticker').innerHTML = event.data;
}
</script>
</head>
<body>
<div id = "sse">
<eventsource src = "/cgi-bin/ticker.cgi" />
</div>
<div id = "ticker" name = "ticker">
[TIME]
</div>
</body>
</html>