Answers by CoreUI Core Team

Explanations that go beyond quick fixes — helping developers understand the concepts behind problems, why they happen, and how to avoid them in the future.

How to use body-parser in Express

Learn how to parse request bodies in Express.js using built-in body parsing middleware for JSON, URL-encoded, and raw data handling.

How to handle middleware in Express

Learn how to implement and use middleware functions in Express.js for request processing, authentication, logging, and error handling.

How to handle 404 pages in Vue Router

Implement proper 404 error handling in Vue Router with catch-all routes for better user experience and SEO-friendly error pages.

How to redirect routes in Vue

Learn how to implement route redirects in Vue Router for navigation control, URL aliases, and user flow management in Vue.js applications.

How to use switchMap operator in Angular

Master the switchMap RxJS operator in Angular for efficient HTTP requests, canceling previous requests and handling search functionality.

How to use takeUntil operator in Angular

Learn how to properly unsubscribe from observables in Angular using the takeUntil operator to prevent memory leaks and improve performance.

How to use react-transition-group for animations

Master react-transition-group for advanced React animations with CSSTransition and TransitionGroup components for smooth UI transitions.

How to animate components in React

Learn how to create smooth component animations in React using CSS transitions with built-in lifecycle hooks and state changes.

How to import a module in JavaScript

Use import statements to bring functions, objects, or default exports from other JavaScript modules into your current file.

How to export a function in JavaScript

Use export keyword with function declarations or export default for single function exports in JavaScript modules.

How to tag a commit in Git

Use git tag to create lightweight or annotated tags for marking important commits like releases and milestones.

How to cherry-pick a commit in Git

Use git cherry-pick to apply specific commits from one branch to another without merging entire branches.

How to create routes in Express

Use Express app methods like get, post, put, and delete to create routes that handle different HTTP requests and URL patterns.

How to create an Express project in Node.js

Use npm init and npm install express to create a new Express.js project with proper structure and basic server setup.

How to lazy load routes in Vue

Use dynamic imports with Vue Router to implement lazy loading for better performance and faster initial page loads.

How to add route guards in Vue

Use Vue Router navigation guards to control route access with authentication checks and user permissions for secure applications.

How to unsubscribe from observables in Angular

Use the unsubscribe method and takeUntil operator to properly clean up observable subscriptions and prevent memory leaks in Angular.

How to subscribe to observables in Angular

Use the subscribe method to handle observable data streams in Angular components with proper subscription management.

How to handle 404 pages in React Router

Use a catch-all route with React Router to handle 404 not found pages and provide better user experience for invalid URLs.

How to use Error Boundaries in React

Use Error Boundaries in React to catch JavaScript errors in component tree and display fallback UI for better user experience.

How to use modules in JavaScript

Use ES6 import and export statements to create modular JavaScript code for better organization and reusability.

How to use nullish coalescing in JavaScript

Use the nullish coalescing operator (??) to provide default values only for null and undefined values in JavaScript.

How to checkout a tag in Git

Use git checkout with tag name to examine specific release versions and tagged commits in your Git repository.

How to checkout a commit in Git

Use git checkout with commit hash to examine specific commits in Git history for debugging and code review.

How to decrypt data in Node.js

Use Node.js crypto module with AES decryption to safely decrypt encrypted data using initialization vectors and authentication tags.

How to encrypt data in Node.js

Use Node.js crypto module with AES encryption to securely encrypt sensitive data for storage and transmission.

How to protect routes in Vue

Use navigation guards in Vue Router to protect routes with authentication checks and access control for secure applications.

How to use query params in Vue

Access and manipulate URL query parameters in Vue using $route.query or useRoute composable for dynamic data filtering.

How to use async pipe in Angular

Use Angular async pipe to automatically subscribe and unsubscribe from observables in templates for clean reactive programming.

How to add headers to requests in Angular

Use HttpHeaders class with HttpClient to add custom headers to HTTP requests in Angular applications.