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Alex Delaney

Alex Delaney

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Slide displaying React best practices, contrasting Don'ts (prop drilling, derived state, overusing useEffect, stale closures) with Do's (lifting state, deriving values on render, using TanStack Query/SWR, stabilizing handlers).
Slide displaying React best practices, contrasting Don'ts (prop drilling, derived state, overusing useEffect, stale closures) with Do's (lifting state, deriving values on render, using TanStack Query/SWR, stabilizing handlers). Fragment #1Slide displaying React best practices, contrasting Don'ts (prop drilling, derived state, overusing useEffect, stale closures) with Do's (lifting state, deriving values on render, using TanStack Query/SWR, stabilizing handlers). Fragment #2Slide displaying React best practices, contrasting Don'ts (prop drilling, derived state, overusing useEffect, stale closures) with Do's (lifting state, deriving values on render, using TanStack Query/SWR, stabilizing handlers). Fragment #3
This slide was generated for the topic:

React Best Practices: Do's and Don'ts

Description provided by the user:

Create a slide contrasting React anti-patterns with recommended practices. It should highlight common mistakes like prop drilling, storing derived state, overusing useEffect, and stale closures. Then, present the better alternatives: lifting state, deriving values on render, using TanStack Query/SWR, and stabilizing handlers. Include brief migration notes for transitioning from older patterns and links to relevant resources like the 'You Might Not Need an Effect' article and the 'Bulletproof React' repository. The slide should have a professional, clean design and clear explanations.

Categories

Coding & ProgrammingTechnology & Software

Generated Notes

We’ll close with a quick contrast between anti-patterns and what to do instead. First, the Don’ts: call out prop drilling through deep trees, derived state stored from props, overusing useEffect for data or DOM sync, and the stale closure problem in handlers and effects. Now I’ll dim those and bring in the Do list: lift state and use Context or Providers to share instead of drilling; derive values on render to avoid duplicating state; use TanStack Query or SWR for data fetching and keep effects minimal; and stabilize handlers with useCallback, refs, and functional updates to avoid stale closures. Migration notes: map class lifecycles to effects, replace legacy context with modern Context, switch createRef to useRef, and use functional updates instead of relying on outdated setState patterns. Resources link points to “You might not need an Effect” on react.dev. The example repo is Bulletproof React for structure and patterns. We’re at slide 20 of 20—thanks!

Behind the Scenes

How AI generated this slide

  1. Analyze user prompt, extracting key information: contrast, anti-patterns vs best practices, specific examples for both.
  2. Structure content into two sections: Don'ts and Do's, mirroring the prompt's contrast.
  3. Select a visually appealing layout: two-column grid for concise comparison.
  4. Choose color scheme: red for Don'ts (negative), green for Do's (positive).
  5. Implement animations: subtle entrance animations for each section to enhance engagement.
  6. Add resources section: Include links to external resources for further learning.
  7. Generate code: Translate design and content into functional React code using Framer Motion for animations and Tailwind CSS for styling.

Why this slide works

This slide effectively communicates React best practices by directly contrasting common mistakes with preferred solutions. The clear visual distinction between 'Don'ts' and 'Do's', aided by color-coding and animations, enhances understanding and memorability. The inclusion of practical examples and external resources provides actionable takeaways for developers seeking to improve their React code. The use of Framer Motion adds a polished touch, while Tailwind CSS ensures a clean and responsive design. The slide's conciseness and focus on key concepts make it ideal for presentations and educational materials targeting React developers of all levels. SEO keywords: React, best practices, anti-patterns, prop drilling, derived state, useEffect, stale closures, TanStack Query, SWR, useCallback, useRef, functional updates, performance optimization, React development.

Frequently Asked Questions

What is prop drilling and why is it bad?

Prop drilling is passing data through multiple layers of components, even if some intermediary components don't need it. This makes code harder to maintain, understand, and refactor. It can also impact performance. Better approaches include lifting state up to a common ancestor or using context providers.

Why should I avoid storing derived state?

Derived state is information that can be calculated from existing props or state. Storing it redundantly introduces potential inconsistencies and increases complexity. It's best to derive values during rendering for improved maintainability and efficiency.

How can I avoid stale closures in React?

Stale closures occur when a function within a component references outdated props or state. This can lead to unexpected behavior. Solutions include using useCallback to memoize functions, using refs to access current values, or leveraging functional updates within setState or useReducer.

What are TanStack Query and SWR and why are they recommended for data fetching?

TanStack Query and SWR are powerful data fetching libraries that simplify and optimize data management in React applications. They handle caching, background updates, and error handling, reducing the need for complex useEffect logic and improving performance. They promote best practices by encouraging efficient data fetching strategies.

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