Be liberal in what you accept and conservative in what you send, which for interfaces means accepting messy input and returning clean output.
LAW·012Law · Robustness
Tag9 entries across 3 sections
input
Entries tagged input, drawn from across the library. Tags cut through the section structure, which is where most of the useful connections are.
Type
Category
Level
9 entries
Suggestions as the user types, which turns recall into recognition when it is fast enough.
PAT·003Pattern · Finding
Checking input at the right moment, which is rarely while the user is still typing.
PAT·007Pattern · Forms
Free-form entry, where the label, the hint and the error placement do most of the work.
CMP·003Component · Forms
Choosing one option from a known set, which is the wrong control below about five options.
CMP·004Component · Forms
Independent on or off choices, where the label is part of the target.
CMP·005Component · Forms
One choice from a small visible set, where seeing all the options is the point.
CMP·006Component · Forms
One of the hardest components to get right, and one where typing is often faster than picking.
CMP·009Component · Forms
Every input needs a persistent label, and format requirements must be stated before the user types.
A11Y·017Accessibility · Understandable