Intenté conectar mi aplicación de javascript con firebase, creé una cuenta en firebase, pegué mi configuración, pero me da 3 errores:
"Exportación" inesperada del token;
No se puede usar la declaración de importación fuera de un módulo;
firebase no está definido
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <body> <script src="https://www.gstatic.com/firebasejs/9.8.3/firebase-app.js"></script> <script src="https://www.gstatic.com/firebasejs/9.8.3/firebase-firestore.js"></script> <script type="module"> // Import the functions you need from the SDKs you need import { initializeApp } from "https://www.gstatic.com/firebasejs/9.8.3/firebase-app.js"; // TODO: Add SDKs for Firebase products that you want to use // https://firebase.google.com/docs/web/setup#available-libraries // Your web app's Firebase configuration const firebaseConfig = { apiKey: "<key>", authDomain: "javascript-3bbaa.firebaseapp.com", projectId: "javascript-3bbaa", storageBucket: "javascript-3bbaa.appspot.com", messagingSenderId: "<id>", appId: "<appId>" }; // Initialize Firebase const firebase = initializeApp(firebaseConfig); const db = firebase.firestore(); </script> </body> </html>En firebase v9, debe usar el método getFirestore. Prueba esto:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <body> <script type="module"> import { initializeApp } from 'https://www.gstatic.com/firebasejs/9.8.3/firebase-app.js'; import { getFirestore, collection, getDocs } from 'https://www.gstatic.com/firebasejs/9.8.3/firebase-firestore-lite.js'; const firebaseConfig = { apiKey: "<key>", authDomain: "javascript-3bbaa.firebaseapp.com", projectId: "javascript-3bbaa", storageBucket: "javascript-3bbaa.appspot.com", messagingSenderId: "<id>", appId: "<appId>" }; // Initialize Firebase const app = initializeApp(firebaseConfig); const db = getFirestore(app); </script> </body> </html>