Course tips and study guides
Study plans, exam and interview preparation, projects and placements, from people a year or two ahead and the UniCircle team. Every tip names its author and is checked by an editor before it appears.
Topics#javascript#html#java#sql#react#accessibility#dsa#interview#nodejs#arrays#error handling#forms#oop#placements#postgresql#abstract classes#acid#aggregates
2 tips tagged #react
- GuideEngineeringUndergraduateReact useEffect: when it runs and how to clean upWhat the dependency array really controls, why effects run twice in development, how to clean up timers and subscriptions, and when you do not need an effect at all.#react#useeffect#hooks#cleanupUniCircle team2 min
- GuideEngineeringUndergraduateReact state versus props, with one small exampleWhat props and state are, who owns each, why you never change props, and how to lift state up when two components need the same data.#react#state#props#lifting state upUniCircle team2 min
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