BEGINNER ESSENTIAL
Component
A reusable or independently described interface unit.
An everyday example
Building blocks also need connection rules.
See how these concepts connect
- Submit orderButton action
- PreparingLoading
- Unavailable: choose againError & recovery
- Order confirmedSuccess
This is one possible failure-and-recovery path, not a mandatory failure. Explain what is happening and offer usable recovery.
Where this term is useful
These are related contexts, not prerequisites.
Back in the project
When it comes up: When describing and reviewing interface design.
What to do next: Specify appearance, behavior, states, and placement.
Open the related method and stepsWhat can this analogy leave out?
Appearance and usability need separate checks; do not rely on color or icons alone.
Everyday examples explain roles and relationships; actual behavior follows the tool, language, or platform.