Premium
JAVASCRIPT Snippets.

Managing DOM Placement with Vue 3 Teleport for Modals

Learn to use Vue 3's `Teleport` feature to render components like modals outside their parent component's DOM hierarchy, ensuring proper styling and stacking.

Using Provide/Inject for Dependency Injection in Vue 3

Understand how Vue 3's `provide` and `inject` features enable dependency injection, allowing data to be passed down through deeply nested components.

Debounce User Input with useDebounce Hook

Implement a custom React `useDebounce` hook to delay execution of functions, perfect for optimizing search inputs, window resizing, or other frequent events.

Persist State with useLocalStorage Hook

Create a `useLocalStorage` React hook to easily persist and retrieve component state in the browser's local storage, ensuring data survives page refreshes.

Track Previous State with usePrevious Hook

Develop a `usePrevious` React hook to easily access the previous value of a prop or state variable, useful for comparing current and past states.

Lazy Load Elements with useIntersectionObserver Hook

Implement a React `useIntersectionObserver` hook for efficient lazy loading, infinite scrolling, or detecting when an element enters or exits the viewport.

Detect Clicks Outside Element with useClickOutside Hook

Create a React `useClickOutside` hook to trigger actions when a user clicks outside a specific DOM element, ideal for closing modals or dropdown menus.

Securely Load Environment Variables in Node.js

Learn to safely manage sensitive data like API keys and database credentials in Node.js applications using environment variables, crucial for production security.

Client-Side Password Strength Validation

Implement real-time client-side password strength validation in JavaScript using regular expressions for a better user experience and initial security feedback.

Implement Basic Rate Limiting Middleware in Node.js

Protect your Node.js API from abuse, brute-force attacks, and denial-of-service attempts by implementing a simple, effective rate limiting middleware.

Sanitize User-Generated HTML with DOMPurify for XSS Prevention

Protect your web application from Cross-Site Scripting (XSS) attacks by robustly sanitizing user-generated HTML content using the DOMPurify library.

Dynamically Create & Append DOM Elements

Learn to dynamically create new HTML elements like div or p, set their content and attributes, and efficiently append them to an existing parent element in the DOM using JavaScript.