Rama Jha·Dec 15, 2025useEffect Isn’t Magic: Side Effects, Dependencies, and Cleanup ExplainedLast month, I was debugging a partner’s React component and found useEffect firing the same API call three times on mount. Their response…
Rama Jha·Dec 11, 2025Mutating Arrays in React State Breaks Your UI (Here’s the Fix)Last month, I watched a junior developer debug a todo app for 20 minutes. Items added just fine, but when they edited an existing todo, the…
Rama Jha·Dec 7, 2025Moving State Up: Why Your Components Need a Common ParentI remember the exact moment my temperature converter broke. Two inputs, one supposed to update the other — Celsius to Fahrenheit and back…
Rama Jha·Nov 25, 2025Controlled Inputs and Boolean Toggles: The 80% of React State You Need to KnowLast Tuesday, I watched a junior dev spend twenty minutes debugging why their shopping cart’s “Remove Item” button was removing two items…
Rama Jha·Nov 22, 2025The useState Rabbit Hole: Functional Updates, Stale Closures, and Your First CounterLearning Objectives
Rama Jha·Nov 20, 2025Building a Product Catalog: The Real Test of Your Week 2 React SkillsI remember the moment I first tried to build a product list. I had learned props, mapping, and conditional rendering separately, and I felt…
Rama Jha·Nov 17, 2025Stop Overthinking Props vs. State: 3 Tiny Rules That Work in Every ProjectLast week, I spent two hours debugging why a form wouldn’t update properly. Turns out, I’d accidentally “mirrored” the user’s email from a…
Rama Jha·Nov 10, 2025onClick and onChange: The Event Handler Patterns Beginners Get WrongLast week, I was pair-programming with a dev who’d been building React for about three weeks. He had a form with an input field, and when…
Rama Jha·Nov 3, 2025The One Conditional Rendering Mistake That’ll Crash Your React AppLast week, a developer in a code review pointed out something that made me pause: they’d written {items.length && <ItemList items={items}…
Rama Jha·Oct 30, 2025Keys, Chaos, and the .map() Method: Handling Dynamic Lists in 2025 ReactLast week I spent three hours debugging a form where checkbox values kept disappearing after users sorted the list. The weird part…