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→ Introduction to React Hooks
→ useState Hook
→ useEffect Hook
→ useContext Hook
→ useReducer Hook
→ useCallback Hook
→ useMemo Hook
→ Custom Hooks
Documentation Generation
Converting React Hooks docs to print-ready PDF
Chapter 3
useEffect Hook
React Hooks API
The useEffect Hook allows you to perform side effects in your components. Some examples of side effects are: fetching data, directly updating the DOM, and timers.
Basic Usage:
useEffect accepts two arguments: a function and a dependency array. The second argument is optional.
import React, { useState, useEffect } from 'react';function Example() {const [count, setCount] = useState(0);useEffect(() => {document.title = `You clicked ${count} times`;// Clean-up function (optional)return () => {document.title = 'React App';};}, [count]); // Only re-run if count changesreturn (<div><p>You clicked {count} times</p><button onClick={() => setCount(count + 1)}>Click me</button></div>);}
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Sarah Johnson
Software Engineer @ TechCorp
"OfflineDocs.ai has been a game-changer for me. I can now study complex repositories, documentation websites, and topics on my e-reader without straining my eyes. The code formatting is perfect!"
Michael Chen
Full-Stack Developer
"I've tried many solutions for offline code reading, but none compare to OfflineDocs.ai. Whether it's a GitHub repo, a documentation site, or a topic I want to learn about, the conversion is always perfect."
Emma Williams
CS Student @ MIT
"As a student, I needed a way to read code without being constantly online. OfflineDocs.ai lets me convert GitHub repos to beautiful PDFs that I can annotate for my studies."
David Rodriguez
iOS Developer @ AppWorks
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DevOps Engineer
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James Wilson
Backend Developer @ CloudSystems
"Converting large repositories used to be a pain. OfflineDocs.ai handles even our biggest codebases with ease. The table of contents feature is especially useful."
Olivia Garcia
UX Designer
"Not just for developers! I use OfflineDocs.ai to study UI components in popular repos. The formatting makes it easy to understand the structure."
Daniel Kim
CTO @ StartupLabs
"We've made OfflineDocs.ai part of our onboarding process. New team members can study our codebase offline with proper formatting. It's been invaluable!"
Sophie Martin
Machine Learning Engineer
"I needed a way to study ML algorithms offline. OfflineDocs.ai's conversion preserves all comments and docstrings perfectly. This is exactly what I was looking for!"
Thomas Lee
Freelance Developer
"As a freelancer who's often on the go, having offline access to client codebases is essential. OfflineDocs.ai creates beautiful PDFs that are easy on the eyes."
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- 1500 credits
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- 4000 credits
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