Using props instead of state for local component updates
A common React confusion arises when deciding whether to use props or state for managing data that changes within a component. Here’s a clear guide to help you make the….
Tag: react best practices
Changing props of child components incorrectly
Properly Handling Child Component Props in React A common React anti-pattern is trying to modify a child component’s props directly or using them incorrectly. Here’s how to properly work with….
Directly modifying state – Do not mutate state directly. Use setState()
Understanding State Immutability in React Why You Shouldn’t Mutate State Directly In React, you should never modify state directly because: Bad Practice: Direct Mutation Good Practice: Using setState() For Functional….
Class component without render() method
The error “Class component without render() method” occurs in React when you’re trying to use a class-based component without defining the render() method. The render() method is essential for class….
Invalid JSX syntax – Adjacent JSX elements must be wrapped in an enclosing tag
The error “Adjacent JSX elements must be wrapped in an enclosing tag” occurs when you try to return multiple JSX elements from a React component without enclosing them in a….
Using CSP (Content Security Policy) with React
Content Security Policy (CSP) is a critical security layer that helps prevent XSS, clickjacking, and other code injection attacks. Here’s how to properly implement CSP with React applications: Basic CSP….
Preventing Clickjacking in React Apps
Clickjacking (UI redress attack) is a malicious technique where attackers trick users into clicking something different from what they perceive. Here’s how to secure your React applications against clickjacking attacks:….
Securing React Applications Against XSS Attacks
Cross-Site Scripting (XSS) remains one of the most prevalent security vulnerabilities in web applications. Here’s a comprehensive guide to protecting your React applications against XSS attacks: Understanding XSS in React….
Debugging React Performance Issues with Flame Graphs
Flame graphs are powerful visualization tools that help identify performance bottlenecks in React applications. Here’s a comprehensive guide to using them effectively: Understanding Flame Graphs What They Show Key Patterns….
Debouncing & Throttling with Lodash in React
In React, performance optimization is essential, especially when handling user input or actions that could trigger frequent updates, such as keystrokes, window resizing, or scrolling. Debouncing and throttling are two….