React Context API

import React, { useState } from 'react'

const GlobalStateContext = React.createContext({ })

export const GlobalStateProvider = ({ children }) => {
    const [config, setConfig] = useState({
        projectInfo: ''
    })
    const [projectFile, setProjectFile] = useState('./test.cpp')
    const [executionState, setExecutionState] = useState("NoProject")

    return (
        <GlobalStateContext.Provider
            value={{
                executionState,
                config,
                projectFile,
                setExecutionState,
                setConfig,
                setProjectFile,
            }}
        >
            {children}
        </GlobalStateContext.Provider>
    )
}

export default GlobalStateContext

Source: stackoverflow.com

Context Api in react

// In App.js 
<NoteState>
	components where you want to use this context which you created    
</NoteState>

// In NoteContext.js 
import { createContext } from "react";

const NoteContext = createContext();

export default NoteContext;

// In NoteState.js or whatever name you want to give
import NoteContext from "./NoteContext";

const NoteState = (props)=>{
  // you can also pass state here also or functions also 
    const user = {
        name: "Gourav Khurana",
        age: 19,
        caast: "General"
    }
    return (
        <NoteContext.Provider value={user}>
            {props.children}
        </NoteContext.Provider>
    )
}
export default NoteState;


This is all about Context API how to create it and add it to Components 

Now how to use it in the Components :- 
  
import React, { useContext } from 'react';
import NoteContext from "../contexts/notes/NoteContext";

const About = () => {
    const contextValue = useContext(NoteContext);
    return (
       you can simply use here. 
    )
}

export default About

Similar codes

0 vote320 views1 answer
Clear input field react-hook-form
Javascript React
0 vote331 views3 answers
Scrollview refresh react native
Javascript React
112 votes373 views6 answers
Import bootstrap 4 in react
Javascript React
15 votes328 views3 answers
Loop over a nerber in react
Javascript React
1 vote342 views1 answer
Using React useRef hook to focus input field on button click
Javascript React
1 vote333 views1 answer
Have flat list automatically wrap react native
Javascript React
3 votes327 views1 answer
Latest react version npm
Javascript React
0 vote360 views3 answers
Error: Maximum update depth exceeded. This can happen when a component repeatedly calls setState inside componentWillUpdate or componentDidUpdate. React limits the number of nested updates to prevent infinite loops.
Javascript React
0 vote334 views1 answer
React-native-cli remove
Javascript React
0 vote340 views1 answer
Show and Hide element in react
Javascript React