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JAVASCRIPT Snippets.

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

JAVASCRIPT

Efficiently Debounce State Updates with useDebounce Hook

Custom React hook `useDebounce` delays updating a state value until a specified time passes, optimizing performance for search inputs or frequent API calls.

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JAVASCRIPT

Persist React State Across Sessions with useLocalStorage Hook

A custom React hook `useLocalStorage` simplifies synchronizing component state with local storage, ensuring data persists even after page refreshes.

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JAVASCRIPT

Detect Clicks Outside an Element with useClickOutside Hook

Custom React hook `useClickOutside` helps components like dropdowns or modals close automatically when a user clicks anywhere outside their boundaries.

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JAVASCRIPT

Access Previous State or Prop Values with usePrevious Hook

The `usePrevious` custom React hook provides a simple way to store and retrieve the previous value of any given state or prop, useful for change detection.

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JAVASCRIPT

Respond to CSS Media Queries in React with useMediaQuery Hook

Custom React hook `useMediaQuery` allows components to react to CSS media queries, enabling dynamic styling or rendering based on screen size.

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Enforce Strong Password Policies with Regex

Validate strong password requirements (min length, uppercase, lowercase, number, special character) with a single JavaScript regular expression for enhanced security.

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Setting Secure, HttpOnly, and SameSite Cookies in Node.js

Secure your web application's cookies by setting HttpOnly, Secure, and SameSite attributes in Node.js/Express to prevent common session hijacking vulnerabilities.

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JAVASCRIPT

Configuring Cross-Origin Resource Sharing (CORS) in Express.js

Securely enable Cross-Origin Resource Sharing (CORS) in your Express.js application, allowing only specified domains to access your API resources.

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Building a Reusable Modal with Teleport and Slots in Vue 3

Create a flexible and accessible modal component in Vue 3 using `Teleport` to render content outside the app, and `slots` for customizable headers, body, and footers.

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Custom Directive for Auto-Focusing an Input in Vue 3

Implement a Vue 3 custom directive to automatically focus an input field or any focusable DOM element when it's rendered. Enhance user experience with declarative focus management.

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Dynamic Components with `is` and `KeepAlive` for Tabbed Interface in Vue 3

Learn to create flexible user interfaces in Vue 3 using dynamic components with the `is` attribute, and `KeepAlive` to preserve component state when switching tabs.

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JAVASCRIPT

Vue 3 Composable for Basic Form Input Validation

Create a reusable Vue 3 composable to easily implement client-side form input validation, checking for common rules like required fields and minimum length.

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