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JAVASCRIPT Snippets.

Fetch All Pages from a Paginated API (JavaScript Async/Await)

Learn to efficiently retrieve all data from a paginated API endpoint using JavaScript's async/await, iterating through pages until all results are fetched.

Transform and Normalize API Response Data (JavaScript)

Learn to process raw API data in JavaScript, transforming it into a clean, normalized structure suitable for display or further application logic.

Client-Side API Response Caching with localStorage (JavaScript)

Boost performance by caching API responses in `localStorage` in JavaScript, reducing redundant network requests and improving user experience.

Dynamically Generate and Append a List of Elements

Learn how to dynamically create multiple HTML elements (like list items) and append them to an existing parent container using JavaScript.

Toggle Element Visibility with JavaScript and CSS Classes

Implement a straightforward show/hide mechanism for any HTML element by toggling a CSS class using JavaScript's classList API.

Smooth Scroll to an HTML Element Programmatically

Implement smooth programmatic scrolling to any target element on a webpage, significantly enhancing user navigation and overall experience.

Read, Set, and Remove Custom Data Attributes

Learn to effectively manipulate custom `data-*` attributes on HTML elements using JavaScript, enabling dynamic content and interactive behavior.

Custom React Hook for Data Fetching with Loading and Error States

Implement a custom React hook, `useFetch`, to handle asynchronous data fetching, including managing loading and error states, making API calls cleaner and reusable.

Detect Clicks Outside an Element with useClickOutside React Hook

Build a `useClickOutside` React hook to detect when a user clicks anywhere outside a specific DOM element, ideal for closing modals, dropdowns, or popovers.

Lazy Loading with useIntersectionObserver React Hook

Implement a `useIntersectionObserver` React hook for efficient lazy loading of images or components, detecting when an element enters the viewport for performance optimization.

React to CSS Media Queries in JavaScript with useMediaQuery Hook

Create a `useMediaQuery` React hook to dynamically respond to CSS media query changes directly within your JavaScript components, enabling responsive logic.

Implement API Rate Limiting Retries with Exponential Backoff

Learn to robustly handle API rate limits (429 Too Many Requests) by implementing an exponential backoff and retry mechanism using JavaScript's Fetch API.