A common React performance issue occurs when useEffect dependencies are incorrectly specified, leading to: Core Principles 1. The Dependency Array Should Reflect All Reactive Values Every value used inside the….
React Hooks were designed specifically for function components and cannot be used directly inside class components. This is a fundamental constraint of React’s architecture. Here’s what you need to know:….
The Importance of useCallback for Event Handlers in Child Components When passing event handlers to child components in React, failing to use useCallback can lead to performance issues. Here’s what….
A particularly insidious type of memory leak occurs when you add event listeners to the window object but fail to remove them when your React component unmounts. Here’s what you….
A common memory leak issue in React occurs when event listeners aren’t properly removed when components unmount. Here’s how to handle this correctly: The Problem When you add event listeners….
In React, when handling events like onChange or onClick, the SyntheticEvent object is pooled for performance reasons—meaning it gets nullified after the event handler finishes. If you try to access….
Passing a function as a prop without binding it in class components in React can lead to issues where the this keyword doesn’t refer to the correct context, causing errors….
Using state updates inside a loop without batching in React can lead to performance issues, unexpected UI behavior, and inefficient rendering. React’s setState is asynchronous and batches updates for performance…..
Calling setState() with a function but not using the previous state in React can lead to inconsistent or incorrect UI updates, especially when the new state depends on the current….
Avoiding Infinite Loops from State Updates in Render A critical React mistake is calling state update functions (like setState or state setters from useState) inside the render() method or function….
