Closed
Description
The existing content could use some narrative information, providing some examples of what "feature detection" actually means, and linking to resources that explain why feature detection has superseded browser detection as the preferred approach, when possible.
Explain that $.support only contains support tests that jQuery needs to function properly, and recommend using Modernizr or other feature detection to supplant that if you need to detect features outside of those that jQuery tests already.
At this point, it really becomes more of a discussion of how to deal with browser-specific behaviour in your app, not just "jQuery basics" so I think it should be moved into the section on code organisation and app strategies.