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context and reducer react

Grumpy Giraffe answered on October 6, 2022 Popularity 9/10 Helpfulness 2/10

answer context and reducer react

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context and reducer react

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// ThemeContext.js

import React, { createContext } from 'react'

const ThemeContext = createContext()

export default ThemeContext

Popularity 9/10 Helpfulness 2/10 Language javascript

Source: frontend.turing.edu

Tags: javascript

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Contributed on Oct 06 2022

Grumpy Giraffe

0 Answers Avg Quality 2/10

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context and reducer react

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// App.js

import React, { useState, useEffect } from 'react';
import Ideas from './Ideas';
import Form from './Form';
import ThemeContext from './ThemeContext';
import './App.css';

function App() {
  const [ideas, setIdeas] = useState([])
  const [theme, setTheme] = useState('light')

  useEffect(() => {
    document.title = `Ideabox (${ideas.length})`
  })

  const addIdea = (newIdea) => {
    setIdeas([...ideas, newIdea]);
  }

  const deleteIdea = (id) => {
    const filteredIdeas = ideas.filter(idea => idea.id !== id);

    setIdeas(filteredIdeas);
  }

  const toggleTheme = () => {
    const newTheme = theme === 'light' ? 'dark' : 'light'
    setTheme(newTheme)
  }

  return(
    <ThemeContext.Provider value={theme}>
      <main className='App'>
        <h1>IdeaBox</h1>
        <button onClick={toggleTheme}>Toggle Theme</button>
        <Form addIdea={addIdea} />
        <Ideas ideas={ideas} deleteIdea={deleteIdea} />
      </main>
    </ThemeContext.Provider>
  )
}

export default App;

Popularity 9/10 Helpfulness 1/10 Language javascript

Source: frontend.turing.edu

Tags: javascript j

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Contributed on Oct 06 2022

Grumpy Giraffe

0 Answers Avg Quality 2/10

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