How to get query string of a current URL in React

In this tutorial, you'll learn to get query string of the current URL in React using react-router-dom v5.1

Consider, we have a <Link /> component in our React app like the one below

<Link to="/home?library=react&lang=javascript">Home</Link>

Anything after '?' in the URL are considered as query string of the URL.

First, To get the current URL we can use useLocation() custom hook available in the react-router-dom library

const location = useLocation();

Now we are going to separate the query string from the current URL using the JavaScript URLSearchParams interface.

To do this we are going to create a custom React hook useQueryString()

const useQueryString = () => {
 const location = useLocation();
 return new URLSearchParams(location.search);
}

This returns a URLSearchParams object instance.

We can use the get() method to retrieve the search parameters value inside the <Home /> component

const Home = () => {
  const queryString = useQueryString();

  return (
    <p>{`Library is ${queryString.get('library')}`}</p>
    <p>{`Language is ${queryString.get('lang')}`}</p>
  );
}

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