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JAVASCRIPT Snippets.

Curated list of production-ready JAVASCRIPT scripts and coding solutions.

JAVASCRIPT

Track Browser Window Dimensions with useWindowSize React Hook

Develop a custom React hook to efficiently get and update the current browser window width and height, enabling responsive layouts and dynamic UI adjustments.

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JAVASCRIPT

Enforcing X-Content-Type-Options: nosniff to Prevent MIME Sniffing

Enhance web security by instructing browsers to disable MIME-sniffing, preventing them from interpreting files as a different content type.

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JAVASCRIPT

Sanitizing User-Generated HTML Content

Securely process user-generated HTML content in web applications using DOMPurify to prevent Cross-Site Scripting (XSS) vulnerabilities effectively.

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JAVASCRIPT

Securely Managing Sensitive Configuration with Environment Variables

Protect sensitive API keys, database credentials, and other configurations by using environment variables in Node.js applications, enhancing security.

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JAVASCRIPT

Enforcing HTTPS with HSTS (HTTP Strict Transport Security)

Implement HTTP Strict Transport Security (HSTS) in Node.js Express to enforce HTTPS, protecting against protocol downgrade attacks and cookie hijacking.

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JAVASCRIPT

Secure CORS Configuration in Node.js Express

Properly configure Cross-Origin Resource Sharing (CORS) in Express.js applications to restrict access to trusted origins, enhancing API security and preventing unauthorized data access.

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JAVASCRIPT

Secure Session Management with HTTP-Only and SameSite Cookies

Configure secure session cookies in Node.js/Express using `express-session` with `HttpOnly`, `Secure`, and `SameSite` attributes to protect against XSS and CSRF attacks targeting session tokens.

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JAVASCRIPT

Implementing Server-Side API Rate Limiting

Protect your API endpoints from abuse, brute-force attacks, and denial-of-service attempts by implementing effective server-side rate limiting using `express-rate-limit` in Node.js.

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JAVASCRIPT

Implement a useDebounce Hook for Input Values

Learn how to create a custom React useDebounce hook to delay state updates, perfect for optimizing search inputs or filtering data to reduce API calls and improve performance.

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JAVASCRIPT

Implement Declarative Timed Actions with useInterval Hook

Create a custom React useInterval hook to run a function repeatedly at a specified delay, offering a clean and declarative way to manage animations or periodic tasks.

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JAVASCRIPT

Secure API Requests with Bearer Token Authentication

Learn to securely authenticate API requests using bearer tokens in JavaScript's Fetch API, sending authorization headers for protected endpoints.

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JAVASCRIPT

Robust API Client with Rate Limit Handling and Retry

Build a resilient API client in JavaScript that automatically handles rate limiting using retry-after headers for robust third-party integrations.

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