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JAVASCRIPT Snippets.

Get Dynamic Window Dimensions in React

Access and react to changes in the browser window's dimensions with a custom `useWindowSize` React hook, enabling responsive UI components.

Extracting All Numerical Values from Text

Learn how to use a regular expression in JavaScript to efficiently extract all sequences of digits from a given string, useful for data cleaning and parsing.

Stripping Basic HTML Tags from a String

Discover how to quickly remove simple HTML tags from a string using a regular expression, perfect for cleaning text content for display purposes.

Converting Kebab-Case Strings to CamelCase

Transform kebab-case strings (e.g., 'my-component') into camelCase (e.g., 'myComponent') using a concise JavaScript regular expression.

Extracting Content Within Double Curly Braces

Learn to extract all dynamic content enclosed within double curly braces (e.g., `{{variable}}`) from a string using a JavaScript regex pattern.

Extracting and Normalizing Phone Numbers

Learn to extract and normalize various phone number formats into a consistent `(XXX) XXX-XXXX` pattern using JavaScript regular expressions.

Validate and Sanitize User Input on Server

Secure your Node.js Express API by validating and sanitizing user input to prevent common vulnerabilities like XSS and SQL injection. Uses express-validator.

Enhance Web Security with HTTP Headers

Protect your Node.js Express application from common web vulnerabilities by implementing essential HTTP security headers using the Helmet middleware.

Hash Passwords Securely with Bcrypt

Learn to securely hash and verify user passwords in your Node.js applications using the robust bcrypt library to protect against credential breaches.

Configure Cross-Origin Resource Sharing (CORS) Securely

Properly configure CORS in your Node.js Express API to control which origins can access your resources, preventing unauthorized cross-domain requests.

Protect Against Cross-Site Request Forgery (CSRF)

Implement robust CSRF protection in your Node.js Express application to prevent attackers from tricking users into executing unwanted actions.

Robust API Fetch with Retry and Exponential Backoff

Implement resilient API calls in JavaScript using `fetch` with automatic retry logic and exponential backoff to handle transient network issues and temporary server unavailability.