Martin Giffy D'Souza has written the Console Wrapper utility. For additional information, see http://www.talkapex.com/2011/01/console-wrapper-previously-js-logger.html.
Console wrapper allows to view the debug information in a nice console window within browsers. Most of the browsers are console-enabled (exception is the Internet Explorer browser). The utility is designed to easily debug JavaScript within applications. It allows developers to use the JavaScript console without breaking anything.
The most common use of the console is the console.log command:
console.log('hello world');
Removing instrumentation code before going into production can be annoying, especially if you need to debug it later on. To resolve this issue, Martin D'Souza has created a console wrapper. This allows you to leave your debugging calls in production code. Here are some features:
When running APEX in debug mode, the log level is automatically set.