Log4js
Log4js - The Logging Framework for JavaScript with no runtime dependencies | Since 2005
Usage
- Download the most current release and unzip the archive.
- Copy the file
js/log4js.min.jsto your project. - Add the JavaScript file to head of HTML page:
<head> <script src="log4js.min.js" type="text/javascript"></script> </head>
- Add script for instantiation of Logger:
let consoleLog = new Log4js.Logger("consoleTest"); consoleLog.setLevel(Log4js.Level.ALL); let consoleAppender = new Log4js.ConsoleAppender(true); consoleLog.addAppender(consoleAppender);
- Then you are able to add logging event:
consoleLog.trace('I was traced!')
Within sources there is a more detailed example.
Development
The project is seperated in modules. Core JavaScript module is located in subdirectory log4js
Structure
├───log4js: Main JavaScript Log4js module
├───log4js-servlet: Java Servlet to collect AJAX-Logs serverside
├───log4js-solr: configuration to collect logs using Apache SOLR
├───log4js-site: (outdated) project documentation
Log4js
Main JavaScript module
To build the JavaScript library we use npm and grunt.
cd log4js
npm install
grunt build
Include then the target/log4js.min.js file in your project.
More details in the Wiki
Log4js Servlet
The servlet is Java based project which is compiled using maven.
Log4js SOLR
For more details see README.md in the subdirectory log4js-solr
Log4js Site
Outdated documentation.
Contribution
Pull Requests are very welcome.
Other JavaScript Logger
There are a lot other projects which are started logging in JavaScript:
There is a very active fork of current log4js framework modified for node.js usage: https://github.com/nomiddlename/log4js-node
Further loggers could be found (and added!) in the Wiki.