Basic post navigation with React and the Wp Rest Api https://since1979.dev/basic-post-navigation-with-react-and-the-wp-rest-api/

wpreact-posts-event-handlers.js

import React, { useState, useEffect } from "react";
import Axios from "axios";

export default function App() {

  // ...
  
  const handlePrevPage = () => setPage(page - 1 ? page - 1 : 1);
  const handleNextPage = () => setPage(page < nrofpages ? page + 1 : nrofpages);
  
}