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JAVASCRIPT Snippets.

Managing Reactive State with Vue 3 Composition API

Learn to manage component-level reactive state in Vue 3 using `ref` for primitives and `reactive` for objects, updating UI efficiently.

Vue 3 Component Communication: Props and Custom Events

Master data flow in Vue 3 using props for parent-to-child communication and custom `emit` events for child-to-parent interaction.

Efficient Derived State with Vue 3 Computed Properties

Utilize Vue 3's `computed` properties in the Composition API to create cached, reactive values derived from other reactive data.

Flexible Content Distribution with Vue 3 Slots

Enhance component reusability in Vue 3 by using slots to inject and distribute dynamic content from parent components.

Fetching Data from an API with GET Request (Async/Await)

Learn how to asynchronously fetch data from a REST API using JavaScript's modern `fetch` API with `async/await` for clean, readable code and basic error handling.

Sending Data to an API with POST Request (JSON)

Discover how to send JSON data to a REST API using JavaScript's `fetch` API for POST requests, ensuring proper content type headers and request body formatting.

Authenticating API Requests with Bearer Token

Secure your API calls by implementing Bearer token authentication with JavaScript's `fetch` API, dynamically adding an Authorization header to your requests.

Robust Error Handling for Fetch API Requests

Enhance your web applications by implementing comprehensive error handling for `fetch` API requests, distinguishing between network, HTTP, and JSON parsing errors for reliability.

Enforce Password Strength

Implement a JavaScript function to validate password strength, requiring minimum length, uppercase, lowercase, numbers, and special characters.

Format Phone Numbers with Hyphens

Learn to automatically format raw 10-digit phone number strings by inserting hyphens, making them more readable for users.

Manage Browser History State for Client-Side Routing

Implement client-side routing in single-page applications by programmatically manipulating the browser's history state and URL without full page reloads.

Smoothly Scroll to an Element or Page Position

Learn to programmatically scroll to any DOM element or specific coordinates on a webpage with smooth animation using native JavaScript methods for enhanced UX.