Events and Interaction

Event handling is application behavior design. Keep interaction paths explicit and testable.

Event binding basics

function SaveButton({ onSave }) {
  return <button onClick={onSave}>Save</button>;
}

Passing event and arguments

<button onClick={(e) => handleDelete(e, id)}>Delete</button>

Event delegation strategy

For large repeated lists, centralize interaction at container level when it simplifies behavior wiring.

Interaction architecture

Separate command intent from presentational markup so business actions stay easy to test and refactor.

Professional tips

  1. Keep handlers small and deterministic.
  2. Avoid hidden global side effects in click handlers.
  3. Add telemetry around critical user flows.

Practice

Create row-level actions for a table and design confirmation/error behavior for destructive operations.