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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.js to 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├───log4js-site: (outdated) project documentation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Outdated documentation.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.

License

LICENSE.txt