Solve the problem of getting undefined in React routing attributes

Question

I want to send some properties (loading and getContacts) to a component in ReactJS. I'm using routing to get each path, but the result is undefined in the target component. How is this going?

const App = () => {
  
  const [getContacts, setContacts] = useState([]);
  const [loading, setLoading] = useState(false);
  
  return(
    <div className='App'>
        <Navbar/>
       
        <Routes>
          <Route path='/' element = {<Navigate to ="/contacts"/>}/>

          <Route path='/contacts' loading= {loading} contacts= {getContacts} element= {<Contacts/>} />

          <Route path="/contacts/add" element = {<AddContact/>}/>

          <Route path = "/contacts/:contactId" element = {<ViewContact/>}/>

          <Route path = "/contacts/edit/:contactId" element = {<EditContact/>}/>

          <Route path="*" element={

              <div className='text-light py-5'>
                Not Found!
              </div>}

          />

        </Routes>

    </div>
);
export default App;

In Contact.jsx I have:

const Contacts = ({ contacts, loading }) => {

    return (
        <>
            <div>{contacts}</div>
            <div>{loading}</div>
        </>
    );
};

export default Contacts;

But they are all undefined.

Answer 1

You are passing props to your <Route/> component.

<Route
  path="/contacts"
  loading={loading}
  contacts={getContacts}
  element={<Contacts />}
/>

But you should pass them to your actual <Contacts/>Component

<Route
  path="/contacts"
  element={<Contacts loading={loading} contacts={getContacts} />}
/>

Answer 2

Try putting the state variable directly into the child element:

<Route path='/contacts' element={<Contacts loading={loading} contacts={getContacts}/>} />