Console

A simple assertion test that verifies whether value is truthy. If it is not, an AssertionError is thrown. If provided, the error message is formatted using util.format() and used as the error message.

When stdout is a TTY, calling console.clear() will attempt to clear the TTY. When stdout is not a TTY, this method does nothing.

Maintains an internal counter specific to label and outputs to stdout the number of times console.count() has been called with the given label.

Resets the internal counter specific to label.

The console.debug() function is an alias for [[console.log]].

Uses [[util.inspect]] on obj and prints the resulting string to stdout. This function bypasses any custom inspect() function defined on obj.

This method calls [[console.log]] passing it the arguments received. Please note that this method does not produce any XML formatting

Prints to stderr with newline.

Increases indentation of subsequent lines by two spaces. If one or more labels are provided, those are printed first without the additional indentation.

The console.groupCollapsed() function is an alias for [[console.group]].

Decreases indentation of subsequent lines by two spaces.

The [[console.info]] function is an alias for [[console.log]].

Prints to stdout with newline.

This method does not display anything unless used in the inspector. Starts a JavaScript CPU profile with an optional label.

This method does not display anything unless used in the inspector. Stops the current JavaScript CPU profiling session if one has been started and prints the report to the Profiles panel of the inspector.

This method does not display anything unless used in the inspector. Prints to stdout the array array formatted as a table.

Starts a timer that can be used to compute the duration of an operation. Timers are identified by a unique label.

Stops a timer that was previously started by calling [[console.time]] and prints the result to stdout.

For a timer that was previously started by calling [[console.time]], prints the elapsed time and other data arguments to stdout.

This method does not display anything unless used in the inspector. Adds an event with the label label to the Timeline panel of the inspector.

Prints to stderr the string 'Trace :', followed by the [[util.format]] formatted message and stack trace to the current position in the code.

The [[console.warn]] function is an alias for [[console.error]].