LWC separates component markup, JavaScript behavior and styling. Components communicate through defined inputs and events, while data access must respect platform security.
Before you begin
Use an authorized development or training organization with fictional records. Record the object names, permissions and configuration used so that someone else can reproduce the exercise.
Work through the idea
First describe the business requirement and the records involved. Keep the exercise separate from a live organization's data and change process. Platform behavior can depend on permissions and configuration; verify those conditions rather than assuming an administrator's result applies to every user.
- Identify a component's public inputs
- Separate rendering from data retrieval
- Trace an event to its parent handler
Practice task
Sketch a parent list and a child record card. The child raises a selection event without directly changing the parent's state.
Check your result
A diagram identifies the input, event payload, loading state and error state.
A mistake to avoid
Avoid tightly coupling a child to the internal DOM or variables of unrelated components.
Keep a review note
Save the inputs or scenario, your reasoning and the result you checked. Explain one assumption and one case that needs more work. Revise the exercise after feedback and distinguish what you demonstrated from what remains untested.
Official reference for further study
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