Graded Browser Support is a strategy designed to maximize testing coverage with limited resources by testing the smallest possible subset of browser combinations and leveraging implicit coverage from shared core browser engines. Learn which browsers are considered baseline for testing. Also learn about the principles of Progressive Enhancement and our content-first approach to development.
For developers who are ready to contribute code back to the YUI project, this tutorial gives you the essentials on downloading YUI source code, setting up the ideal workflow and submitting pull requests.