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JAVASCRIPT Snippets.

Curated list of production-ready JAVASCRIPT scripts and coding solutions.

JAVASCRIPT

Building a Responsive Design Composable with Vue 3 `useMediaQuery`

Create a custom Vue 3 composable (`useMediaQuery`) to reactively track CSS media query states, enabling responsive logic in your components and abstracting away `window.matchMedia` details.

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JAVASCRIPT

Creating a Custom v-model Component in Vue 3

Learn how to build a reusable Vue 3 component that supports the v-model directive, enabling two-way data binding for custom inputs or elements, enhancing component interaction.

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Simple Global State Management with Vue 3's Provide/Inject

Discover how to share reactive state across deeply nested components in Vue 3 using the provide and inject API, ideal for configuration data or application-wide settings.

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Displaying Modals/Notifications with Vue 3's Teleport

Leverage Vue 3's Teleport feature to render a component's content into a different DOM location, perfect for modals, tooltips, or global notifications that need to break out of parent styling.

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Dynamically Swapping Components in Vue 3 with `:is`

Learn how to render different components based on a reactive state using Vue 3's dynamic component feature with the :is attribute, ideal for tabbed interfaces, wizards, or complex forms.

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How to Auto-Focus an Input Field in React with `useRef`

Master React's `useRef` hook to auto-focus input fields or interact directly with DOM elements on component mount, improving user experience and accessibility effectively.

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Global Theme Management in React with `useContext`

Efficiently manage global UI states like themes in your React app using `useContext`. Implement a simple theme switcher, avoiding prop drilling for clean code.

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Manage Complex Form State with React's `useReducer` Hook

Master React's `useReducer` hook for robust and predictable state management in complex forms. Enhance code organization and maintainability for multi-field inputs.

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Optimize React Performance with `useCallback` for Event Handlers

Optimize React performance with `useCallback`. Memoize event handler functions to prevent unnecessary re-renders of child components, significantly improving application speed.

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Build a Reusable `useFetch` Hook for Data Loading in React

Build a reusable `useFetch` hook for React. Encapsulate data fetching logic, including loading, error handling, and data states, for declarative and efficient API calls.

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Generating URL-Friendly Slugs

Create clean, SEO-friendly URL slugs from any string in JavaScript by normalizing characters and replacing spaces with hyphens.

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Extracting All Numbers from a String

Learn to easily extract all numeric values, including integers and decimals, from any string using a concise JavaScript regex pattern.

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