Curated list of production-ready JAVASCRIPT scripts and coding solutions.
Implement a robust retry mechanism with exponential backoff for API requests in JavaScript, improving fault tolerance against temporary network or server issues. Essential for resilient API integrations.
Learn to properly configure Cross-Origin Resource Sharing (CORS) preflight requests in a Node.js Express API, enabling secure cross-domain client-side communication.
Efficiently upload single or multiple files to a REST API from a web browser using JavaScript's `FormData` object and the `fetch` API.
Optimize web performance by executing multiple independent API requests concurrently using JavaScript's `Promise.all`, reducing overall loading times.
Learn to fetch data from APIs using modern JavaScript `async/await` syntax, including comprehensive error handling for network issues and API response errors.
Protect sensitive API keys in Node.js applications by loading them from environment variables, preventing their exposure in source code or client-side bundles.
Implement client-side pagination for APIs by parsing 'Link' HTTP headers (often used for HATEOAS) to navigate through paginated results like 'next', 'prev', 'first', and 'last' pages.
Implement a basic rate limiter in Node.js to control the frequency of outgoing API calls, preventing your application from exceeding external service rate limits.
Validate email addresses with a robust regular expression in JavaScript to ensure correct format for forms and user input, improving data quality.
Validate full URLs, including protocol and optional path, and extract the protocol using JavaScript regex for link verification and parsing.
Implement a JavaScript regex pattern to validate password strength, ensuring it meets minimum requirements like length, uppercase, lowercase, numbers, and special characters.
Discover how to efficiently extract all valid hex color codes (3-digit or 6-digit) from any string using JavaScript regular expressions for styling or parsing.