log4javascript
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HTML
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head>
<title>log4javascript example from manual</title>
<meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
<meta name="author" content="Tim Down - tim@log4javascript.org" />
<meta name="description" content="log4javascript, a logging framework for JavaScript based on log4j" />
<meta name="robots" content="all" />
<script type="text/javascript" src="../js/log4javascript.js"></script>
<script type="text/javascript">
//<![CDATA[
var log = log4javascript.getLogger();
var popUpAppender = new log4javascript.PopUpAppender();
var popUpLayout = new log4javascript.PatternLayout("%d{HH:mm:ss} %-5p - %m%n");
popUpAppender.setLayout(popUpLayout);
log.addAppender(popUpAppender);
var ajaxAppender = new log4javascript.AjaxAppender("myloggingservlet.do");
ajaxAppender.setThreshold(log4javascript.Level.ERROR);
log.addAppender(ajaxAppender);
log.debug("Debugging message (appears in pop-up)");
log.error("Error message (appears in pop-up and in server log)");
//]]>
</script>
</head>
<body>
<h1>log4javascript example from manual</h1>
</body>
</html>