The Console of the Google Chrome browser is part of it's developer tools and debugger. Use this tag when asking questions about the Console API and it's usage.
Console is an integral part of Javascript debugging when done in Google Chrome. It offers the user a command line interface to execute Javascript expressions. Also it provides a logging interface to programmers who wish to log debug messages while executing a script.
The Console API provides web applications with methods for writing information to the console, creating JavaScript profiles, and initiating a debugging session.
You can find Console API reference here.