我是html和js的初学者。尝试注册新用户时出现以下错误。互联网上发现的所有问题都没有帮助我找到解决方案：
Uncaught TypeError: Cannot read property 'close' of undefined
at auth.js:22
at r.g (auth.js:19)
at Dt (auth.js:22)
at Ct (auth.js:22)
at mt.t.Ub (auth.js:21)
at vt (auth.js:15)
这是index.html：
<html>
<head>
<title> First test </title>
<!-- Load library: The core Firebase JS SDK is always required and must be listed first -->
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/css/materialize.css">
<script src="https://www.gstatic.com/firebasejs/7.5.0/firebase-app.js"></script>
<!-- Load library: Add additional services you want to use -->
<script src="https://www.gstatic.com/firebasejs/5.0.1/firebase-firestore.js"></script>
<!-- Load library: Authentification -->
<script src="https://www.gstatic.com/firebasejs/5.0.1/firebase-auth.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/js/materialize.min.js"></script>
<script>
var firebaseConfig = {
apiKey: "**********",
authDomain: "**********",
databaseURL: "************",
projectId: "**********",
storageBucket: "****************",
messagingSenderId: "**********"
};
// Initialize Firebase
firebase.initializeApp(firebaseConfig);
var firestore = firebase.firestore();
firestore.settings({
timestampsInSnapshots: true
});
const auth = firebase.auth();
</script>
</head>
<!-- Authentificate a new user -->
<div id="modal-signup" , class='modal'>
<div class='modal-content'>
<h4> Sign Up </h4><br />
<form id='signup-user'>
<div class='input-field'>
<input type='email' id="signup-email" />
<label for='signup-email'> email adress </label>
</div>
<div class='input-field'>
<input type='password' id="signup-password" />
<label for='signup-password'> password </label>
</div>
<button id='signup-button' type='submit'>sign up</button>
</form>
</div>
</div>
<script src='./auth.js'></script>
</html>
<!-- <script src="https://www.gstatic.com/firebasejs/5.0.1/firebase-storage.js"></script> -->
还有auth.js脚本
// values from the firebase console
const signupForm = document.querySelector('#signup-user');
// Sign up function
signupForm.addEventListener("submit", (e) => {
e.preventDefault(); // avoid the page to refresh when we click signup
// get user info from the id of the input
const email = signupForm['signup-email'].value;
const password = signupForm['signup-password'].value;
auth.createUserWithEmailAndPassword(email, password).then( cred => {
console.log(cred);
const modal = document.querySelector('#modal-signup');
console.log(modal)
M.Modal.getInstance(modal).close();
signupForm.reset();
// div id
});
});
我认为问题出在
M.Modal.getInstance(modal).close();行。看来modal未定义。但是，当我用console.log登录时，变量modal存在。
最佳答案
您没有初始化模态，只需进行以下更改：
const modal = document.querySelector('#modal-signup');
var instance = M.Modal.init(modal);
M.Modal.getInstance(instance).close();
您也没有使用物化CSS和脚本链接：
<link href="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/css/materialize.css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/js/materialize.min.js"></script>
<!-- Modal Structure -->
关于javascript - firebase auth.js:12未捕获的TypeError:无法读取未定义的属性“close”，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/59248729/