assert()

Writes an error message to the console if a assertion is false

clear()

Clears the console

count()

Logs the number of times that this particular call to count() has been called

error()

Outputs an error message to the console

group()

Creates a new inline group in the console. This indents following console messages by an additional level

groupCollapsed()

Creates a new inline group in the console. However

groupEnd()

Exits the current inline group in the console

info()

Outputs an informational message to the console

log()

Outputs a message to the console

table()

Displays tabular data as a table

time()

Starts a timer (can track how long an operation takes)

timeEnd()

Stops a timer that was previously started by console.time()

trace()

Outputs a stack trace to the console

warn()

Outputs a warning message to the console