The YUI Global

Provides core YUI functionality, including module registration and consumption utils,

language/array/object utilities, browser detection, a setTimout/setInterval wrapper,

and dynamic loading of script and css files.

The yui module is a rollup yui-base (the core module registration/sandbox system and utilities),

and the following optional submodules:

get (for dynamic script loading)

yui-log (out of the box console log support)

yui-later (timer abstraction)

throttle (performance utilitity)

intl-base (for dynamically loading language packs)

yui-base contains

Module registration system

Lang

Object

Array

Core

3.3.0

* Added fast path for repeat calls to use() with the same arguments.

* ES5 methods such as Object.create will be used instead of the corresponding YUI implementation when appropriate.

* Added a destroy method

* Added YUI.GlobalConfig -- three stage configuration (YUI.GlobalConfig --> YUI_Config --> instance configs)

is helpful in non-browser environments for supplying an overarching config for the YUI container.

3.2.0

* script errors in module and use callback functions are caught and routed through Y.error

* Y.error invokations can be monitored with the errorFn configuration

* Returning true from the errorFn will prevent the script error from halting further script execution.

* Added UA properties for mobile. UA is only evaluated once.

* The YUI global will overwrite itself when included again, attempting to preserve

global the global environment of previous instances.

* Added a remote loader service submodule.

* Added a features submodule. This is used by the capabilities-based loader

when dispatching to a remote loader service.

* Added Y.Lang.sub(), which is a very lightweight version of Y.substitute()

* Y.Array.hash() doesn't skip falsy values.

3.1.1

* Removed limit on the number of config objects you can supply to the constructor

3.1.0

* YUI will attempt to fetch newly discovered dependencies after a module is dynamically loaded.

* The document element (HTML) is now stamped with a class name (yui-js-enabled) indicating that JS is enabled allowing for the creation of JS-aware CSS style rules for Progressive Enhancement.

* Added the ability to define a global configuration object (YUI_config).

* Added Object.some()/Y.some()

* UA refinements for Chrome, Android and other browsers/platforms

* Inserted script nodes get charset="utf-8" by default.

* Added last() to Queue for LIFO support.

* Added throttle utility to buffer expensive functions that are called frequently.

* The callback to YUI.add gets the module name as the second parameter for

generic processing of similar modules.

* Added intl-base submodule to process the decision tree for selecting language

packs when dynamically loading internationalized modules.

* Y.guid generates identifiers that are safe to use as html attributes.

* Improved persistent messaging for missing modules/functionality.

* Bootstrapping improved to prevent simultaneous loading of resources when multiple instances are launched at the same moment.

* The YUI script source URL is read in order to try to dynamically determine the base path for loading resources on demand.

* The path to the loader and the version of the file to bootstrap is determined by the YUI script source.

* The core loads without errors in non-browser environments.

3.0.0

* Extracted the loader from the seed file. Instead, if loader not included, 'get' is included,

and dependencies are missing, the loader will be fetched before continuing.

* User agent detection is more granular. e.g., FireFox 3.5 reports gecko 1.91 rather than 1.9.

* Fixed UA.os.

* Added additional mobile device detection.

* Get utility attribute cleanup before purging nodes.

* cached accepts a parameter to refresh a cached value.

* yui-log and yui-later are now optional modules that are included with yui.js.

* queue-base is no longer a submodule of queue -- it is part of yui-base.

* All YUI submodules end up in the yui build directory.

* Dynamic loading can be disabled by setting the 'bootstrap' config to false.

3.0.0 beta 1

Core:

- Y.fail has been renamed to Y.error so that Y.fail can be used for the assertion

engine.

- Y.stamp now accepts a readOnly parameter to be used when you are only interested

in reading an existing guid rather than creating a new one.

- Y.stamp defends against stamping items that can't be stamped.

- Added to Object: values(), hasKey(), hasValue(), size(), getValue, setValue

(the latter are for manipulating nested values)

- Y.use calls are queued during dynamic loading.

- Added Y.cached for function memoizing

- added numericSort to Array

- The yui:log event broadcasts globally.

Lang:

- Added Lang.type (typeof abstraction), and refactored some 'is' methods to use it.

Get:

- Accepts an attribute collection config to apply to inserted nodes.

- id attributes are globally unique

- Now accepts purgethreshold as a config option. This will set the number of transactions

required before auto removing nodes from previous transactions (default is 20)

Loader:

- yuitest renamed to test, now requires collection

- lots of new module metadata

- added onCSS

- Loader requests are queued globally

- Accepts jsAttributes and cssAttributes configs for adding attributes to inserted nodes

- The force config

UA:

- Added 'secure' property for SSL detection

- Added 'os' property for windows vs mac detection

- Added Adobe Air and Google Caja detection

3.0.0pr2

Core:

- The initial dependency calculation should not allow automatic rollup.

- Y.fail with throw/rethrow errors by default (throwFail is now true).

- Y.namespace reverted to scrub YAHOO out if included as the first

level of the namespace.

- 'useConsole' config changed to useBrowserConsole

Array:

- Added Array.some

Get:

- Protects against trailing commas in array of files to load.

Loader:

- get requires yui-base

- loader requires get

- combo url build process defends against undefined modules

- Added combo handler support for CSS

- Filters are correctly applied to combo and fullpath urls

- Added compat, profiler, yuitest, widget, stylesheet, classnamemanager,

overlay, plugin, slider, console

- Added io submodules

- queue requires event

- Added submodule metadata logic

- Added plugin metadata logic

- Added skin metadata logic

3.0.0pr1

Initial release