How can I get (query string) parameters from the URL in Next.js?

Question

When I click on a link in my /index.js, it brings me to /about.js page.

However, when I\'m passing parameter name through URL (like

Answer 1

Post.getInitialProps = async function(context) {

  const data = {}
  try{
    data.queryParam = queryString.parse(context.req.url.split('?')[1]);
  }catch(err){
    data.queryParam = queryString.parse(window.location.search);
  }
  return { data };
};