YUI 3: The Yahoo User Interface Library
YUI is a free, open source JavaScript and CSS framework for building richly
interactive web applications. YUI is provided under a BSD license and is
available on GitHub for forking and contribution.
This project is no longer maintained, as of August 2014. Please see
this announcement
for more information.
Bug fixes and security fixes will no longer be supported, so usage of
YUI is at your own risk. The documentation will continue to be available at
yuilibrary.com for reference.
Links
- Home Page
- Documentation
- Blog
- Latest Production Release
- Forums
- License
- Contributor Info
- Contributor Mailing List
- Report a Bug
- Shifter, for building YUI
Source Info
This is the active working source tree for YUI 3. It contains work in progress
toward the next YUI 3 releases and may be unstable.
We encourage you to use the latest source for evaluation purposes, testing new
features and bug fixes, and to provide feedback on new functionality. Please
refer to the "Latest Production Release" link above if you're looking for the
latest stable release of YUI recommended for production use.
If you plan on contributing to YUI, please join and monitor the "Contributor
Mailing List" listed above. Information about milestones and tree closures
will be made available there.
Branch Information
YUI's development happens on five main branches. The following describes what
each of these code branches represents:
-
live-docs: Represents the latest GA release of YUI, plus any
documentation-only updates. Any tweaks or additions to the docs for the
latest release happen on this branch, and they are reflected on the website.
-
master: (Read-only) Contains everything in live-docs, plus code changes that will go
into the next YUI release. The code changes in master are either bug fixes
or small changes which should not break API compatibility. Patch releases
will be cut from this branch; e.g. 3.6.x. All code in this branch has fully
passed all unit tests and should be stable.
-
3.x: (Read-only) Represents the next major YUI release; e.g. 3.7.0. This is an
integration branch which contains everything in master, plus larger code
changes which will go into a future YUI release. The changes in 3.x
require a minor version increment before they are part of release, e.g.,
3.7.0. Preview Releases will be cut from this branch for developers to test
and evaluate. All code in this branch has fully passed all unit tests and should be stable.
-
dev-master and dev-3.x: Current working branches containing code that
has not been through the CI process. Developers check their changes in to
these integration branches for the automated testing system to validate. Once they
are validated, the code is merged into master and 3.x respectively. Never check in to
master or 3.x directly.
-
release-3.x.x: Short-lived release branches where code checkins are carefully
managed for extensive testing and release deployment.
Source Tree
The YUI source tree includes the following directories:
-
build: Built YUI source files. The built files are generated at
development time from the contents of the src directory. The build step
generates debug files (unminified and with full comments and logging),
raw files (unminified, but without debug logging), and minified files
(suitable for production deployment and use).
-
src Raw unbuilt source code (JavaScript, CSS, image assets, ActionScript
files, etc.) for the library. Beginning with YUI 3.4.0, the src directory
also contains all module-specific documentation, tests and examples. All
modifications to the library and its documentation should take place in
this directory.
Initial Setup
- Fork the project on GitHub (https://github.com/yui/yui3).
- Clone the fork to your local environment for development.
Do Good Stuff
- Create a feature branch to house atomic code changes.
git checkout -b myfeature upstream/master --no-track
- Satisfy the contribution requirements
(see YUI Contribution Standards).
- Push changes to your fork.
- Submit a pull request from your fork to the
live-docs,
dev-master, or dev-3.x branch for review.
- Incorporate community feedback.
- Push changes to your fork -- the pull request will automatically update.
- Rinse and repeat.
All changes should continue to be made on the feature branch; that way the pull
request you submit will automatically update to include them. Make sure to keep
the feature branch updated with the latest changes from master, so that they
don't diverge during your development process.
Important Tips
- Always work from a feature branch. Since all code submissions will be
through a Pull Request, feature branches isolate changes from one submission to another.
- Always start your new branch from the branch you want to submit to:
git checkout -b myfeature dev-master
- Remember to submit your Pull Request to the proper
dev- branch and not
master or 3.x.
Building
To build YUI components install Shifter (npm -g install shifter)
and then simply run shifter in that components directory.
Shifter also allows you to rebuild the entire YUI src tree:
cd yui3/src && shifter --walk
