1) Download wordpress file from https://wordpress.org/download/ 2) Open xampp, wamp or openserver. I will show with xampp server. Also Xampp server recommended too. 3) Add wordpress folder to htdocs folder (for xampp) 4) cd xampp\htdocs\wordpress\wp-content\themes 5) npx create-react-wptheme react_theme 6) cd react_theme/react-src 7) yarn start 8) go to wp-admin dashboard change worpdress theme to react_theme 9) again yarn start 10) yarn build App.js http://localhost/wordpress_react/?rest_route=/wp/v2/posts import React , { Component } from 'react' ; class App extends Component { constructor ( props ){ super ( props ); this . state = { data : [] } } componentDidMount () { return fetch ( `http://localhost/wordpress_react/?rest_route=/wp/v2/posts` ) . then (( response ) => response . json ()) . then (( responseJson ) => { this . setState ({ data : ...