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JAVASCRIPT Snippets.

Custom Hook for Toggling UI Elements (e.g., Modals, Drawers)

Create a reusable React custom hook, `useToggle`, to effortlessly manage the visibility state of modals, sidebars, or any UI component with a simple toggle.

Global State Management with `useContext` and `useReducer`

Implement powerful global state management in React using `useContext` and `useReducer` to avoid prop drilling and maintain centralized, predictable state updates.

Memoizing Function References with `useCallback` for Performance

Optimize React component rendering by using `useCallback` to memoize event handlers and functions, preventing unnecessary re-renders of child components.

Managing Async Operations with `useEffect` Cleanup for Data Fetching

Implement robust data fetching in React components using `useEffect` with proper cleanup to prevent memory leaks and handle unmounted component updates.

Get Element Dimensions and Position (getBoundingClientRect)

Precisely retrieve the size and position of any DOM element relative to the viewport using `getBoundingClientRect()`, essential for dynamic layouts, overlays, and animations.

Creating a Custom Vue 3 Directive for Click Outside

Implement a custom Vue 3 directive to detect clicks outside an element, perfect for closing dropdowns, modals, or context menus efficiently.

Animating List Items with Vue 3 TransitionGroup

Learn to effortlessly animate the insertion, removal, and reordering of list items in Vue 3 using the powerful `<TransitionGroup>` component and CSS.

Managing Reactive Side Effects with Vue 3 `watchEffect`

Discover how to use Vue 3's `watchEffect` to automatically track reactive dependencies and run side effects, simplifying complex reactivity scenarios.

Validate Email Address Format with Regex

A robust JavaScript regular expression snippet to accurately validate the common format of email addresses, ensuring correct input in web forms and applications.

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.