useContextMultiple

useContext1.js

import React, {useState, useContext} from 'react';

const Context = React.createContext()
const App = () => {
 const [fontSize, updateFontSize] = useState(14);
 const [fontFamily, updateFontFamily] = useState('Ariel');
 const [text, updateText] = useState('Sample');
 const providerVal = {
   fontSize: fontSize, 
   updateFontSize: (val) => updateFontSize(val)
   fontFamily: fontFamily,
   updateFontFamily: (val) => updateFontFamily(val)
   text: text,
   updateText: updateText
 }
 return (
   <Context.Provider value={providerVal}>
      <Child1></Child1>   
      <Child2></Child2>
   <Context.Provider>
  ) 
}
const Child1 = () => {
  //Need only text
  const {text, updateText} = useContext(Context);
 return (
   <React.Fragment>
     <input value={text} onChange={(val) => updateText(val)}/>
     <Child3></Child3>
    </React.Fragment>
  ) 
}
const Child2 = () => {
  //This will have font family
  const {fontFamily, updateFontFamily} = useContext(Context);
 return (
   <React.Fragment>
    <input style=`font-family: ${fontFamily}` onChange={(val) => updateFontFamily(val)}/>
    <Child3></Child3>
   </React.Fragment>
  ) 
}

const Child3 = () => {
 //want to access the fontSize
  const {fontSize, updateFontSize} = useContext(Context);
 return (
   <input value={fontSize} onChange={(e) => updateFontSize(e.target.value)}></input>
  ) 
}
export default App