เริ่มต้นใช้งานการตรวจสอบสิทธิ์ Firebase ในเว็บไซต์

import { initializeApp } from "firebase/app"; import { getAuth } from "firebase/auth";  // TODO: Replace the following with your app's Firebase project configuration // See: https://firebase.google.com/docs/web/learn-more#config-object const firebaseConfig = {   // ... };  // Initialize Firebase const app = initializeApp(firebaseConfig);   // Initialize Firebase Authentication and get a reference to the service const auth = getAuth(app); 

import firebase from "firebase/compat/app"; import "firebase/compat/auth";  // TODO: Replace the following with your app's Firebase project configuration // See: https://firebase.google.com/docs/web/learn-more#config-object const firebaseConfig = {   // ... };  // Initialize Firebase firebase.initializeApp(firebaseConfig);   // Initialize Firebase Authentication and get a reference to the service const auth = firebase.auth(); 

import { getAuth, createUserWithEmailAndPassword } from "firebase/auth";  const auth = getAuth(); createUserWithEmailAndPassword(auth, email, password)   .then((userCredential) => {     // Signed up      const user = userCredential.user;     // ...   })   .catch((error) => {     const errorCode = error.code;     const errorMessage = error.message;     // ..   });
auth_signup_password.js

firebase.auth().createUserWithEmailAndPassword(email, password)   .then((userCredential) => {     // Signed in      var user = userCredential.user;     // ...   })   .catch((error) => {     var errorCode = error.code;     var errorMessage = error.message;     // ..   });
email.js

import { getAuth, signInWithEmailAndPassword } from "firebase/auth";  const auth = getAuth(); signInWithEmailAndPassword(auth, email, password)   .then((userCredential) => {     // Signed in      const user = userCredential.user;     // ...   })   .catch((error) => {     const errorCode = error.code;     const errorMessage = error.message;   });
auth_signin_password.js

firebase.auth().signInWithEmailAndPassword(email, password)   .then((userCredential) => {     // Signed in     var user = userCredential.user;     // ...   })   .catch((error) => {     var errorCode = error.code;     var errorMessage = error.message;   });
email.js

import { getAuth, onAuthStateChanged } from "firebase/auth";  const auth = getAuth(); onAuthStateChanged(auth, (user) => {   if (user) {     // User is signed in, see docs for a list of available properties     // https://firebase.google.com/docs/reference/js/auth.user     const uid = user.uid;     // ...   } else {     // User is signed out     // ...   } });
auth_state_listener.js

firebase.auth().onAuthStateChanged((user) => {   if (user) {     // User is signed in, see docs for a list of available properties     // https://firebase.google.com/docs/reference/js/v8/firebase.User     var uid = user.uid;     // ...   } else {     // User is signed out     // ...   } });
index.js