AgentSkillsCN

put-interaction-logic-in-event-handlers

将交互逻辑置于事件处理器中

SKILL.md
--- frontmatter
name: put-interaction-logic-in-event-handlers
description: Put Interaction Logic in Event Handlers

Put Interaction Logic in Event Handlers

If a side effect is triggered by a specific user action (submit, click, drag), run it in that event handler. Do not model the action as state + effect; it makes effects re-run on unrelated changes and can duplicate the action.

Incorrect (event modeled as state + effect):

tsx
function Form() {
  const [submitted, setSubmitted] = useState(false);
  const theme = useContext(ThemeContext);

  useEffect(() => {
    if (submitted) {
      post('/api/register');
      showToast('Registered', theme);
    }
  }, [submitted, theme]);

  return <button onClick={() => setSubmitted(true)}>Submit</button>;
}

Correct (do it in the handler):

tsx
function Form() {
  const theme = useContext(ThemeContext);

  function handleSubmit() {
    post('/api/register');
    showToast('Registered', theme);
  }

  return <button onClick={handleSubmit}>Submit</button>;
}

Reference: Should this code move to an event handler?