Forgetting to Bind Functions in Class Components A common React class component mistake is passing methods as props without proper binding, which leads to this being undefined when the function….
A critical React mistake is modifying state directly rather than using the proper setState() method (for class components) or state setter function (for functional components). The Problem Why this is….
Using Deprecated React Lifecycle Methods The Problem with Legacy Lifecycle Methods React has deprecated several class component lifecycle methods, including: These were replaced because: Why You Should Stop Using componentWillMount….
Not using shouldComponentUpdate in class components is a common mistake in React class-based components, especially when performance optimization is needed. The shouldComponentUpdate lifecycle method is used to prevent unnecessary re-renders….
Preventing Multiple API Requests in React Components A common performance issue in React applications occurs when data fetching is incorrectly placed in the render method or directly in the component….
Understanding Asynchronous State Updates in React A common pitfall in React development is trying to access updated state values immediately after calling setState or the state setter from useState. This….
In React, using hooks inside class components is not allowed because hooks are designed exclusively for functional components. If you attempt to use hooks inside a class component, React will….
Handling Window Events Properly in React A common source of memory leaks in React applications comes from adding window event listeners without properly removing them when components unmount. Here’s how….
Arrow Functions in JSX and Re-render Performance Issues Using arrow functions directly in JSX can cause unnecessary component re-renders, which is a common performance pitfall in React applications. The Problem:….
Properly Binding Event Handlers in React Class Components When working with event handlers in React class components, properly handling the this context is crucial. Here’s a breakdown of the correct….
