What is web application in HTML5
In this article I have describe about Web application Events.
What is HTML5 Server-Sent Events
- When a web page updates automatically from a server, it is a server-sent event.
- The web page would have to ask if any updates were available in server-sent events.
- The SSE servers can start data transmission for client, and send a message update.
- Facebook/Twitter updates, stock price updates, news feeds, sport results, etc.
Web Application for SSE
- Server sent event is a web application, and add an <eventssource> element to the document.
- The <eventssources> elements should point to an URL in src attribute, and provide a HTTP connection that sends a data stream containing the events.
- The URL would point to a PHP, PERL or any Python script of sending event data consistently.
- Web application expect server time in this example.
Example
<!DOCTYPE HTML>
<html>
<head>
<script type="text/javascript">
/* Define event handling logic here */
</script>
</head>
<body>
<div id="sse">
<eventsource src="/cgi-bin/ticker.cgi" />
</div>
<div id="ticker">
<TIME>
</div>
</body> </html>
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Define the code
- We create a new object in Event Source, then URL page sending the updates.
- Message event receive update for each time.
- Message put data into the element id="Sse".
Further Readings
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