javascript - HTML 无法向 Firebase 发送数据
问题描述
在我写完之后firebase login
,firebase init
这个文件这个文件出现了 My CSS firebaserc
{
"projects": {
"default": "smarthome-e154e"
}
}
如果您想查看我的代码,请使用我的 HTML。
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<title>Pembagi Kartu</title>
<link rel = "icon" href = "title.png" type = "image/x-icon">
<link rel="stylesheet" href="styles.css">
<style>
body {
background-image: url('card2.jpg');
background-repeat: no-repeat;
background-attachment: fixed;
background-size: cover;
}
</style>
</head>
<body>
<header class="fixed-top bg-light">
<nav class="navbar navbar-expand-lg navbar-light container">
<a class="navbar-brand" href="#">Pembagi Kartu Otomatis</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav ml-auto">
<li class="nav-item active">
<a class="nav-link" href="index.html">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pilihan</a>
</li>
</ul>
</div>
</nav>
</header>
<br><br><br><br><br>
<content>
<div class="container bg-light "style="min-height: 100%;height: 100%; background-color: aliceblue;">
<div class="justify-content-center d-flex">
<button type="button" class="btn btn-success" onclick="led1on()" id="Acak">Acak</button>
<button type="button" class="btn btn-danger" onclick="led1off()" id="Tentukan">Tentukan</button>
<button type="button" class="btn btn-primary">Mulai</button>
</div>
<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>
</div>
</content>
<br><br><br><br><br>
<footer class="fixed-bottom bg-light">
<br>
<div class="inner container">
<p>© Renaldy Kevin Sidharta - 2021</p>
</div>
</footer>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
<script src="app.js"></script>
</body>
</html>
我想将数据更新到 Firebase,我的项目是使用互联网打开或关闭灯。
我的 app.js
const firebaseConfig = {
SENSORED };
firebase.initializeApp(firebaseConfig);
let database = firebase.database();
function led1off(){
console.log(document.getElementById());
database.ref('Lampu/Led0').set("0");
}
function led1on(){
database.ref('Lampu/Led0').set("1");
}
写后我的错误firebase serve --debug --only function
[2021-11-09T12:17:35.704Z] AssertionError [ERR_ASSERTION]: expected value to be defined but got "undefined"
at new AssertionError (internal/assert/assertion_error.js:467:5)
at Object.assertDefined (C:\Users\Kevin\AppData\Roaming\npm\node_modules\firebase-tools\lib\utils.js:360:15)
at C:\Users\Kevin\AppData\Roaming\npm\node_modules\firebase-tools\lib\serve\index.js:15:36
at arrayMap (C:\Users\Kevin\AppData\Roaming\npm\node_modules\firebase-tools\node_modules\lodash\lodash.js:653:23)
at Function.map (C:\Users\Kevin\AppData\Roaming\npm\node_modules\firebase-tools\node_modules\lodash\lodash.js:9622:14)
at serve (C:\Users\Kevin\AppData\Roaming\npm\node_modules\firebase-tools\lib\serve\index.js:14:25)
at Command.actionFn (C:\Users\Kevin\AppData\Roaming\npm\node_modules\firebase-tools\lib\commands\serve.js:47:16)
at C:\Users\Kevin\AppData\Roaming\npm\node_modules\firebase-tools\lib\command.js:190:25
at processTicksAndRejections (internal/process/task_queues.js:95:5)
Error: An unexpected error has occurred.
发生什么事?我不知道如何解决这个问题。请帮我
我想将此数据库值更新为 0 或 1
注意:我正在使用 node.js
解决方案
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