Ignoring React warnings in console, leading to bigger issues later
The Dangers of Ignoring React Console Warnings (And How to Fix Them Properly) Ignoring React warnings in the console is like ignoring “Check Engine” lights in your car – small….
Tag: React Debugging
Using document.querySelector instead of useRef in React
When working with DOM elements in React, you have two main approaches: using document.querySelector() (the traditional JavaScript way) or useRef (the React way). Here’s when and how to use each,….
Using hooks inside class components
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:….
Not using useCallback when passing event handlers to child components
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….
Listening to window events without cleaning them up
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….
Forgetting to remove event listeners on unmount
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….
Not handling right-click (contextmenu) events properly
Properly handling right-click events (contextmenu) in React requires understanding both the event system and browser behavior. Here’s a comprehensive guide to avoid common pitfalls: Basic Right-Click Handling Standard Context Menu….
Using an object directly inside JSX instead of JSON.stringify
Properly Displaying Objects in JSX When you need to display an object’s contents in JSX, you can’t render the object directly. Here are the correct approaches: The Problem This doesn’t….
Using unnecessary dependencies in useEffect
Optimizing useEffect Dependencies A common React performance pitfall is including unnecessary dependencies in the useEffect dependency array, which can lead to excessive re-renders, infinite loops, or stale closures. The Problem:….
Ignoring warnings and errors in development console
Addressing Development Console Warnings and Errors in React Ignoring warnings and errors in your development console is a dangerous practice that can lead to production issues. Here’s how to properly….