🔧 Una Visión Completa de los Hooks Integrados en React 🚀

import { useState } from "react";

function Counter() {
  const [count, setCount] = useState(0);

  return (
    <div>
      <p>Count: {count}</p>
      <button onClick={() => setCount(count + 1)}>Increment</button>
    </div>
  );
}

import { useReducer } from "react";

const initialState = { count: 0 };

function reducer(state, action) {
  switch (action.type) {
    case 'increment':
      return { count: state.count + 1 };
    case 'decrement':
      return { count: state.count - 1 };
    default:
      throw new Error();
  }
}

function Counter() {
  const [state, dispatch] = useReducer(reducer, initialState);

  return (
    <div>
      <p>Count: {state.count}</p>
      <button onClick={() => dispatch({ type: 'increment' })}>Increment</button>
      <button onClick={() => dispatch({ type: 'decrement' })}>Decrement</button>
    </div>
  );
}

import { useContext } from "react";
import { ThemeContext } from "./ThemeContext";

function ThemedButton() {
  const theme = useContext(ThemeContext);

  return (
    <button style={{ background: theme.background, color: theme.color }}>
      Themed Button
    </button>
  );
}

import { useRef } from "react";

function TextInput() {
  const inputRef = useRef(null);

  const focusInput = () => {
    inputRef.current.focus();
  };

  return (
    <div>
      <input ref={inputRef} type="text" />
      <button onClick={focusInput}>Focus Input</button>
    </div>
  );
}

import { useEffect, useState } from "react";

function DataFetcher({ url }) {
  const [data, setData] = useState(null);

  useEffect(() => {
    const fetchData = async () => {
      const response = await fetch(url);
      const result = await response.json();
      setData(result);
    };

    fetchData();
  }, [url]);

  return (
    <div>
      <pre>{JSON.stringify(data, null, 2)}</pre>
    </div>
  );
}

import { useMemo } from "react";

function TodoList({ todos, tab }) {
  const visibleTodos = useMemo(() => {
    return todos.filter(todo => todo.tab === tab);
  }, [todos, tab]);

  return (
    <ul>
      {visibleTodos.map(todo => (
        <li key={todo.id}>{todo.text}</li>
      ))}
    </ul>
  );
}

import { useCallback } from "react";

function ParentComponent() {
  const handleClick = useCallback(() => {
    console.log("Button clicked");
  }, []);

  return <ChildComponent onClick={handleClick} />;
}

function ChildComponent({ onClick }) {
  return <button onClick={onClick}>Click me</button>;
}

import { useState, useTransition } from "react";

function List({ items }) {
  const [isPending, startTransition] = useTransition();
  const [query, setQuery] = useState('');

  const handleChange = (e) => {
    startTransition(() => {
      setQuery(e.target.value);
    });
  };

  const filteredItems = items.filter(item => item.includes(query));

  return (
    <div>
      <input type="text" value={query} onChange={handleChange} />
      {isPending && <p>Loading...</p>}
      <ul>
        {filteredItems.map(item => (
          <li key={item}>{item}</li>
        ))}
      </ul>
    </div>
  );
}

import { useState, useDeferredValue } from "react";

function SearchResults({ query, results }) {
  const deferredQuery = useDeferredValue(query);

  const filteredResults = results.filter(item => item.includes(deferredQuery));

  return (
    <ul>
      {filteredResults.map(result => (
        <li key={result}>{result}</li>
      ))}
    </ul>
  );
}