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JAVASCRIPT Snippets.

Validate Hex Color Code with Regex

Quickly validate hexadecimal color codes (e.g., #RRGGBB, #RGB, #RGBA, #RRGGBBAA) using a regex pattern in JavaScript for styling applications.

Validate URL Slug or Permalink with Regex

Ensure clean and SEO-friendly URL slugs or permalinks using a regex pattern that permits lowercase letters, numbers, and hyphens.

Tracking Previous State or Prop Values with usePrevious Hook

A custom React hook `usePrevious` that stores and returns the previous value of any prop or state variable, useful for comparing current and past values.

Detecting Element Visibility with useIntersectionObserver Hook

A React hook `useIntersectionObserver` to easily detect when a DOM element enters or exits the viewport, perfect for lazy loading and animations.

Throttling Function Calls with useThrottle Hook

A custom React hook `useThrottle` to limit the rate at which a function is called, improving performance for frequently triggered events.

Getting Real-time Window Dimensions with useWindowSize Hook

A custom React hook `useWindowSize` to effortlessly get the current width and height of the browser window for responsive component rendering.

Efficiently Add Multiple DOM Elements Using DocumentFragment

Learn how to significantly improve performance when adding numerous elements to the DOM by utilizing the DocumentFragment API in JavaScript, minimizing costly reflows and repaints.

Toggle CSS Classes for Dynamic Element Styling

Master the `classList.toggle()` method in JavaScript to easily add or remove CSS classes from elements, enabling dynamic styling and interactive UI components with minimal code.

Efficient Event Handling with JavaScript Event Delegation

Discover how to use event delegation to manage events on multiple or dynamically added DOM elements efficiently, improving performance and simplifying event listeners on your web pages.

Set and Retrieve Custom Data Attributes on DOM Elements

Learn to store and access custom data directly on HTML elements using `data-*` attributes and JavaScript's `dataset` API, perfect for managing UI state and element-specific logic.

Smooth Scroll to a Specific Element with JavaScript

Implement smooth scrolling to any target element on your webpage using the native `scrollIntoView()` method with a behavior option, enhancing user navigation and experience.

Animated List Transitions with Vue 3's TransitionGroup

Implement smooth, animated transitions for lists, adding, removing, or reordering elements using Vue 3's <TransitionGroup> component for enhanced user experience.