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JAVASCRIPT Snippets.

Detect Clicks Outside a Component

A custom React hook to detect clicks outside of a specified DOM element, perfect for closing dropdowns, modals, or tooltips when users click elsewhere.

Synchronize React State with Local Storage

A custom React hook to store and retrieve state directly from browser's local storage, ensuring data persistence across page reloads for enhanced user experience.

Execute a Function Repeatedly at Intervals

A custom React hook that enables executing a given function repeatedly after a specified delay, similar to `setInterval`, but with a clean lifecycle management.

React to CSS Media Queries in Components

A custom React hook to dynamically detect if a CSS media query matches, enabling responsive component rendering based on screen size or other device characteristics.

Detect Hover State of a Component

A custom React hook to easily track the hover state of any DOM element, simplifying the creation of interactive UI components like tooltips or hover effects.

Robust API Calls with Exponential Backoff Retries

Implement resilient API requests by automatically retrying failed calls with increasing delays, essential for handling transient network issues or temporary server unavailability.

Securely Uploading Files to an API with FormData

Learn to upload files, images, or documents to a server-side API using JavaScript's FormData object, supporting both single and multiple file uploads in web applications.

Efficient API Polling for Real-time Data Updates

Implement effective API polling to regularly fetch and update data in your web application, complete with proper cleanup to prevent memory leaks and ensure optimal performance.

Cancelling In-Flight API Requests with AbortController

Learn how to effectively cancel pending `fetch` API requests using `AbortController` in JavaScript, preventing race conditions and optimizing resource usage in dynamic web applications.

Throttling & Debouncing API Requests for Performance

Optimize web application performance by implementing client-side throttling and debouncing techniques to control the frequency of API calls, preventing overload and improving user experience.

Extracting a Specific Query Parameter from URL

A JavaScript regex function to easily extract the value of a named query parameter from a given URL string, useful for front-end routing.

Removing Basic HTML Tags from a String

A JavaScript regex snippet to strip simple HTML tags from a string, useful for converting rich text to plain text or basic content sanitization.