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JAVASCRIPT Snippets.

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

JAVASCRIPT

Persist State with `useLocalStorage` React Hook

Create a `useLocalStorage` hook to effortlessly synchronize and persist React state with the browser's local storage, ensuring data remains available across page reloads.

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JAVASCRIPT

Track Previous State or Prop with `usePrevious`

Develop a `usePrevious` React hook to access the previous value of any state or prop, enabling comparisons and logic based on changes over time in your components.

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JAVASCRIPT

Respond to CSS Media Queries with `useMediaQuery`

Build a `useMediaQuery` React hook to programmatically detect if a CSS media query matches, allowing dynamic component rendering and styling based on screen size.

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JAVASCRIPT

Validate Email Address with Regex

Learn to validate email addresses using a robust regular expression in JavaScript to ensure correct format for user input.

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JAVASCRIPT

Validate URL Format with Regex

Implement a JavaScript function to validate URLs, ensuring they follow standard protocols (http/https) and domain structures.

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JAVASCRIPT

Validate Strong Password with Regex Criteria

Check password strength in JavaScript using regex to enforce requirements like uppercase, lowercase, numbers, special characters, and minimum length.

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JAVASCRIPT

Extract Hashtags from Text String

Discover how to efficiently extract all hashtags from a given text string using a regular expression in JavaScript, perfect for social media features.

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JAVASCRIPT

Remove HTML Tags from String Input

Sanitize user input by removing all HTML tags from a string using a regular expression, preventing potential cross-site scripting (XSS) vulnerabilities.

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JAVASCRIPT

Implement a Repeating Interval with `useInterval` React Hook

Create a custom React `useInterval` hook to easily manage `setInterval` logic within your components, ensuring proper cleanup on unmount and preventing memory leaks.

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JAVASCRIPT

Attach and Clean Up Event Listeners with `useEventListener` React Hook

Create a reusable `useEventListener` React hook to easily attach and remove DOM event listeners, improving component lifecycle management and preventing memory leaks.

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JAVASCRIPT

Execute Code on Component Mount and Unmount with Custom Hooks

Implement `useMount` and `useUnmount` React hooks to run specific logic exactly once when a component is mounted or unmounted, mimicking class component lifecycles.

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JAVASCRIPT

Safely Use `useLayoutEffect` in SSR Environments with `useIsomorphicLayoutEffect`

Implement `useIsomorphicLayoutEffect` to conditionally use `useLayoutEffect` on the client-side and `useEffect` on the server-side, preventing SSR warnings in React.

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