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JAVASCRIPT Snippets.

Enforce Strong Password Rules with Regex

A JavaScript regex snippet to enforce strong password policies, requiring a minimum length, at least one uppercase, lowercase, number, and special character for enhanced security.

Validate IPv4 Address Format with Regex

A precise JavaScript regular expression to validate IPv4 address formats, ensuring each octet is within the 0-255 range, essential for network-related input validation.

Reactively Track CSS Media Queries with useMediaQuery

Build a React hook, useMediaQuery, to dynamically respond to CSS media query changes, enabling responsive components based on screen size.

Simplify setInterval with useInterval React Hook

Create a robust useInterval React hook to manage timed actions, automatically handling interval setup and cleanup for recurring tasks.

Track Browser Online/Offline Status with useOnlineStatus

Implement a useOnlineStatus React hook to monitor network connectivity, allowing components to display different UI based on online/offline state.

Toggle Fullscreen Mode with useFullscreen Hook

Create a custom React hook, useFullscreen, to easily toggle fullscreen mode for any DOM element, enhancing multimedia or presentation experiences.

Implementing a useDebounce Custom Hook in React

Create a custom `useDebounce` React hook to delay function execution, optimizing performance for real-time input fields like search bars and preventing excessive re-renders.

Persisting State with a useLocalStorage React Hook

Develop a `useLocalStorage` custom hook for React to easily store and retrieve component state in the browser's local storage, ensuring data persistence across sessions.

Tracking Previous State or Props with usePrevious Hook

Create a `usePrevious` custom React hook to efficiently access the previous value of any state or prop, enabling powerful comparison and change detection logic within components.

Throttling Function Calls with a useThrottle React Hook

Develop a `useThrottle` custom React hook to limit the rate at which a function can be called, optimizing performance for frequently triggered events like scrolling or window resizing.

Creating a Reusable Vue 3 Composable for Fetching Data

Discover how to build a custom Composition API function (composable) in Vue 3 to encapsulate and reuse data fetching logic across multiple components.

Global Error Handling with app.config.errorHandler in Vue 3

Implement a centralized error handling mechanism in your Vue 3 application using `app.config.errorHandler` to catch and log all unhandled errors.