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JAVASCRIPT Snippets.

Securely Hashing Passwords with Argon2 in Node.js

Learn how to securely hash and verify user passwords using the Argon2 algorithm in Node.js, a modern and recommended approach for credential storage.

Preventing Clickjacking Attacks with X-Frame-Options in Node.js

Safeguard your web application from clickjacking attacks by setting the X-Frame-Options header using the Helmet middleware in Node.js Express.

Implementing API Rate Limiting in Node.js Express Applications

Protect your Node.js Express API from brute-force attacks and abuse by implementing effective rate limiting using the express-rate-limit middleware.

Extracting All URLs (HTTP/HTTPS) from a String

Discover how to efficiently extract all complete HTTP or HTTPS URLs present within a given text string using a powerful regular expression in JavaScript.

Removing HTML Tags from a String (Basic Sanitization)

Learn to strip HTML tags from user-provided strings using a simple regular expression in JavaScript, useful for basic content cleaning.

Validating Strong Passwords with Multiple Criteria

Implement robust password validation using a single regex that checks for minimum length, uppercase, lowercase, numbers, and special characters.

Validating North American Phone Numbers (NPA-NXX-XXXX)

Validate common North American phone number formats (e.g., (123) 456-7890, 123-456-7890) using a flexible regex in JavaScript.

Creating a Simple Vue 3 Composable for Toggle Logic

Learn to create a basic, reusable Vue 3 composable (`useToggle`) for managing boolean states, simplifying component logic and promoting code organization.

Empowering Component Reusability with Vue 3 Scoped Slots

Utilize Vue 3 scoped slots to pass data from a child component to its parent's slot content, enabling highly flexible and customizable component structures.

Adding Enter/Leave Transitions to Vue 3 Elements

Implement smooth enter and leave animations for conditionally rendered elements in Vue 3 using the built-in `<Transition>` component and CSS transitions.

Implementing OAuth 2.0 Client Credentials Flow for API Access

Securely access APIs from your server using the OAuth 2.0 Client Credentials Grant, ideal for server-to-server communication without user interaction.

Robust API Calling with Exponential Backoff and Retry Logic

Implement a resilient API retry mechanism using exponential backoff to gracefully handle rate limits and transient errors, improving integration stability.