React
What are Hooks?
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What are Hooks?

Hooks let you use state in functional components

code 
import { useState } from 'react';
useState
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useState

Manage state in your components

code 
const [count, setCount] = useState(0);
useEffect
3 / 5

useEffect

Handle side effects in your components

code 
useEffect(() => {
  document.title = `Count: ${count}`;
}, [count]);
Custom Hooks
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Custom Hooks

Create your own reusable hooks

code 
function useCounter(initial) {
  const [count, setCount] = useState(initial);
  return { count, setCount };
}