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Log4js Examples

Log4js is a JavaScript implementation of logging. Similar to the Java implementation Log4j.

Some loggers could cause a JavaScript exception on this page. This could happen because the browser do not support all features.

Window Console Logging

Inline Console Logging

Toggle also with ALT-D; on FireFox 2.0 use: SHIFT+ALT+D.

Ajax Logging

Sending a bigger number of logs:

Local File Logging (Internet Explorer only) (C:\log4js.log)

Window Event Logging (Internet Explorer only) (Control Panel > Administrative Tools > Event Viewer)

Alert Logging

Mozilla JavaScript Logging

Opera JavaScript Logging