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 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.

How to use Suspense in React

Use React Suspense to handle loading states for lazy components and data fetching with clean declarative syntax.

How to implement lazy loading in React Router

Use React.lazy() with Suspense to implement code splitting and lazy loading in React Router for improved performance.

How to check if a variable is a function in JavaScript

Use typeof operator to check if a variable is a function in JavaScript with this simple and reliable type checking method.

How to check if a variable is an object in JavaScript

Use typeof and null check with Array.isArray() to accurately determine if a variable is a plain object in JavaScript.

How to checkout a branch in Git

Use git checkout branch-name or git switch branch-name to change to an existing branch in your Git repository.

How to rename a branch in Git

Use git branch -m command to rename the current branch or git branch -m old-name new-name to rename any branch in Git.

How to generate random strings in Node.js

Use crypto.randomBytes() with toString() to generate cryptographically secure random strings in Node.js for tokens and IDs.

How to hash passwords in Node.js

Use bcrypt library to securely hash passwords in Node.js with salt rounds for maximum security and protection against attacks.

How to use route params in Vue

Access URL parameters in Vue components using $route.params object or useRoute composable for reactive parameter handling.

How to create dynamic routes in Vue

Use parameter placeholders in Vue Router paths to create dynamic routes that accept variable segments for flexible routing.

How to use interceptors in Angular

Create HTTP interceptors in Angular to handle authentication tokens, error handling, and request/response transformations globally.

How to handle HTTP errors in Angular

Use HttpErrorResponse with try-catch blocks or error operators to gracefully handle HTTP errors in Angular applications.

How to protect routes in React Router

Use a higher-order component to protect routes in React Router by checking authentication status before rendering protected components.

How to redirect in React Router

Use Navigate component or useNavigate hook to redirect users programmatically in React Router with this modern and efficient approach.