The Ultimate
Snippet Library.

Build a Reusable and Accessible JavaScript Modal Dialog

Discover how to programmatically create and manage an accessible modal dialog, including focus trapping, keyboard navigation (Esc key), and dynamic content injection.

Implement a Live Character Counter for Textarea Inputs

Learn to create a real-time character counter that updates as a user types into a textarea, providing immediate feedback on text length against a defined limit.

Safely Sanitize User HTML Input Before Displaying in DOM

Protect your web application from Cross-Site Scripting (XSS) attacks by learning how to securely sanitize untrusted HTML input using a temporary DOM element.

Dynamically Add and Remove Items in a JavaScript List

Explore how to programmatically create new list items, append them to a container, and implement functionality to remove individual items from a dynamic list.

Implement Exponential Backoff for API Retries

Learn to build resilient web applications by implementing an exponential backoff strategy for API call retries, enhancing reliability in unstable network conditions.

Handle Paginated API Responses with Dynamic URLs

Master client-side pagination by fetching and displaying data from API endpoints, dynamically managing 'next' and 'previous' page links using the 'Link' header.

Create a Node.js API Proxy to Protect Sensitive Keys

Securely integrate third-party APIs in frontend applications by proxying requests through a Node.js server to hide API keys and bypass CORS issues effectively.

Execute Concurrent API Calls with `Promise.allSettled`

Optimize data loading by making multiple API requests simultaneously using `Promise.allSettled`, handling individual success or failure gracefully without blocking others.

Securely Receive and Verify Webhooks in Node.js

Build a robust webhook receiver in Node.js, including critical signature verification to ensure incoming requests are legitimate and untampered, enhancing security.

Building a Reusable `useFetch` Composable for API Calls

Create a custom Vue 3 composable to encapsulate data fetching logic, providing reactive state for loading, errors, and fetched data across multiple components easily.

Implementing Client-Side Routing with Vue Router 4

Discover how to set up Vue Router for single-page applications, define routes, render components based on URL, and perform programmatic navigation in Vue 3 projects.

Managing DOM Placement with Vue 3's `Teleport` Component

Leverage Vue 3's built-in `Teleport` component to render components in a different part of the DOM tree, perfect for modals, notifications, and tooltips, avoiding CSS stacking issues.