welcome.html

<!DOCTYPE html>
<html>
<head>
	<title>Welcome</title>
	<script type="text/javascript" src="imageupload.js"></script>
</head>
<body>
<h1>Welcome</h1>
<center>
    <form enctype="multipart/form-data">
        <label>select image : </label>
        <input type="file" id="image" accept="image/*"><br><br>
        <button type="button" onclick="upload()">Upload</button>
    </form>
</center>
   <!-- The core Firebase JS SDK is always required and must be listed first -->
    <script src="https://www.gstatic.com/firebasejs/8.2.1/firebase-app.js"></script>
    <script src="https://www.gstatic.com/firebasejs/6.0.1/firebase.js"></script>
    <!-- TODO: Add SDKs for Firebase products that you want to use
     https://firebase.google.com/docs/web/setup#available-libraries -->
    <script>
        // Your web app's Firebase configuration
  // For Firebase JS SDK v7.20.0 and later, measurementId is optional
  var firebaseConfig = {
    apiKey: "AIzaSyAsq2FT_7zQ4iyY5evm_5Tu28KzbrQvG_I",
    authDomain: "test-1-5626c.firebaseapp.com",
    projectId: "test-1-5626c",
    storageBucket: "test-1-5626c.appspot.com",
    messagingSenderId: "25172260807",
    appId: "1:25172260807:web:5713c73dfbbba482e60be2",
    measurementId: "G-8GTWJEXNVM"
  };
  // Initialize Firebase
  firebase.initializeApp(firebaseConfig);
</script>
</body>
</html>