Prototype-UI

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UI. Logger

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UI. Logger

Summary

UI. Logger
Logging Facilities	Prototype UI provides a facility to log message with levels.
AbstractLogger
Properties
level	The log level, default value is debug <br/>
Functions
debug	Logs with “debug” level
info	Logs with “info” level
warn	Logs with “warn” level
error	Logs with “error” level
NullLogger	Does nothing
MemLogger	Logs in memory
Properties
logs	An array of logs, objects with “date”, “level”, and “message” properties
ConsoleLogger	Logs using window.console
ElementLogger	Logs in a DOM element
Functions
initialize	Constructor, takes a DOM element to log into as argument
Properties
format	A format string, will be interpolated with “date”, “level” and “message”

Logging Facilities

Prototype UI provides a facility to log message with levels. Levels are in order “debug”, “info”, “warn” and “error”.

As soon as the DOM is loaded, a default logger is present in UI.logger.

This logger is :

an ElementLogger if $(‘log’) is present
a ConsoleLogger if window.console is defined
a MemLogger otherwise

See AbstractLogger to learn how to use it.

Example

UI.logger.warn('something bad happenned !');

AbstractLogger

Summary

Properties
level	The log level, default value is debug <br/>
Functions
debug	Logs with “debug” level
info	Logs with “info” level
warn	Logs with “warn” level
error	Logs with “error” level

Properties

level

The log level, default value is debug <br/>

Functions

debug

Logs with “debug” level

info

Logs with “info” level

warn

Logs with “warn” level

error

Logs with “error” level

NullLogger

Does nothing

MemLogger

Logs in memory

Summary

Properties
logs	An array of logs, objects with “date”, “level”, and “message” properties

Properties

logs

An array of logs, objects with “date”, “level”, and “message” properties

ConsoleLogger

Logs using window.console

ElementLogger

Logs in a DOM element

Summary

Functions
initialize	Constructor, takes a DOM element to log into as argument
Properties
format	A format string, will be interpolated with “date”, “level” and “message”

Functions

initialize

initialize: function( element )

Constructor, takes a DOM element to log into as argument

Properties

format

A format string, will be interpolated with “date”, “level” and “message”

Example

"<p>(#{date}) #{level}: #{message}</p>"

initialize: function( element )

Constructor, takes a DOM element to log into as argument

Logs in a DOM element

Logs using window.console

Logs in memory