index.html

<!DOCTYPE html>
<html lang="es">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Firebase Firestore CRUD con Javascript y HTML</title>
    <link rel="stylesheet" href="style.css">
</head>
<body>

    
    <div class="container">

        <form class="form" id="task-form">

            <div class="form-container">
                <div class="form-group">
                    <input type="text" id="task-title" class="form-control" class="Task Title" placeholder="Task Title" autofocus>
                </div>
        
                <div class="form-group">
                    <textarea id="task-description" rows="3" class="form-control" placeholder="Task Description"></textarea>
                </div>
                
                <div class="botones">
                    <button class="button-01" id="btn-task-form">Guardar</button>
                    <div id="btn-cancelar">

                    </div>
                </div>
            </div>

            
        </form>
        <div class="sub-container" id="tasks-container">
    
        </div>
    </div>
        


    <!-- The core Firebase JS SDK is always required and must be listed first -->
    <script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-app.js"></script>

    <!-- TODO: Add SDKs for Firebase products that you want to use
        https://firebase.google.com/docs/web/setup#available-libraries -->

    <script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-firestore.js"></script>
    <script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-analytics.js"></script>

    <script>
    // Your web app's Firebase configuration
    var firebaseConfig = {
        apiKey: "AIzaSyB_EPSESVqXvo65Cj7G2O2ZAQmxNuqACqA",
        authDomain: "daniek-crud.firebaseapp.com",
        databaseURL: "https://daniek-crud.firebaseio.com",
        projectId: "daniek-crud",
        storageBucket: "daniek-crud.appspot.com",
        messagingSenderId: "531025386699",
        appId: "1:531025386699:web:3547856a73807186458f4e",
        measurementId: "G-Y6RTZ9F60G"
    };
    // Initialize Firebase
    firebase.initializeApp(firebaseConfig);
    firebase.analytics();
    </script>

    <script src="index.js"></script>    
</body>
</html>