<!DOCTYPE html> <html> <head> <title>Example</title> <script type="text/javascript" src="js/log4javascript.js"></script> <script> //<![CDATA[ var log = log4javascript.getLogger(); var ajaxAppender = new log4javascript.AjaxAppender("http://localhost:3000/"); ajaxAppender.setThreshold(log4javascript.Level.ERROR); log.addAppender(ajaxAppender); function log4jsTest() { log.trace("トレース・メッセージです"); log.d