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JAVASCRIPT Snippets.

Secure Password Hashing with bcrypt (Node.js)

Learn to securely hash and verify user passwords using the bcrypt library in Node.js, an essential practice for protecting sensitive user data against breaches.

Secure HTML Sanitization for User-Generated Content (DOMPurify)

Implement robust HTML sanitization using DOMPurify in JavaScript to safely render user-generated content and prevent XSS attacks in your web applications.

Vue 3 Pinia Store for Global State Management

Learn to manage global application state in Vue 3 using Pinia, Vue's official state management library. Create stores, define state, getters, and actions for reactive data flow.

Vue 3 Composable for Asynchronous Data Fetching

Build a reusable Vue 3 Composable to handle asynchronous data fetching, loading states, and error handling, promoting cleaner and more modular code.

Dynamically Render Components in Vue 3

Implement dynamic component rendering in Vue 3 using the `<component :is='...' />` attribute, enabling flexible UIs that load components conditionally or asynchronously.

Vue 3 Teleport for Modals and Overlays

Use Vue 3's built-in Teleport component to render modals, tooltips, or notifications outside their parent component's DOM hierarchy for cleaner structure.

Creating Custom Directives in Vue 3

Extend Vue 3's functionality by creating custom directives to encapsulate reusable, low-level DOM manipulations, such as auto-focusing elements.

Simple Client-Side API Caching with `localStorage`

Optimize web application performance by implementing a basic client-side API cache using `localStorage` to store and retrieve frequently accessed data.

Fetching All Pages with Cursor-Based API Pagination

Learn to effectively retrieve all data from APIs utilizing cursor-based pagination, fetching successive pages until no more items are available.

Dynamic CORS Policy for Express.js APIs

Implement a flexible CORS policy in your Express.js API, allowing dynamic configuration of allowed origins based on environment or specific requirements.

Extract URL Query Parameters

Extract individual key-value pairs from a URL's query string using a JavaScript regular expression and iteration for easy data access.

Implementing HTTP Security Headers in Express.js

Learn to secure your Express.js application by implementing essential HTTP security headers like HSTS, CSP, X-Frame-Options, and X-Content-Type-Options using Helmet middleware.