HashRouter

react-router-dom

ts

import {
  HashRouter as Router,
  Switch,
  Route,
  Link
} from "react-router-dom";

ts

const Foo = () => {
  let { id } = useParams();
  return <span>{id}</span>;
}
 
const App: React.FC = () => {
  return (
    <HashRouter hashType="noslash">
      <Switch>
        <Route path="/" exact children={<span>root</span>} />
        <Route path="/1" children={<h3>One</h3>} />
        <Route path="/2" children={<h3>Two</h3>} />
        <Route path="/:id" children={<Foo />} />
      </Switch> 

<a href={"#" + key}>{value.title}</a> <Link to={key}>{value.title}</Link>

https://github.com/ReactTraining/react-router/blob/master/packages/react-router-dom/docs/api/HashRouter.md