【发布时间】：2021-06-04 19:43:53
【问题描述】：
我是该网站和 React 的新手。 我在 React 中构建了一个可以正常工作的项目，并且一直在工作。 我想把它上传到firebase，所以我做了npm run build，我不能把它上传到firebase，现在npm start也不起作用。
这让我发疯，这是我得到的错误：
错误：目标容器不是 DOM 元素。
3 | import App from './App';
4 | import * as serviceWorker from './serviceWorker';
5 |
> 6 | ReactDOM.render(<App />, document.getElementById('root'));
7 |
8 | // If you want your app to work offline and load faster, you can change
9 | // unregister() to register() below. Note this comes with some pitfalls.
我想我不小心在使用 npm run build、firebase init 或 firebase deploy 时做错了。这可能真的很小
公共/index.html： 我做了 npm run build - 也许我改变了它
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Welcome to Firebase Hosting</title>
<!-- update the version number as needed -->
<script defer src="/__/firebase/8.2.10/firebase-app.js"></script>
<!-- include only the Firebase features as you need -->
<script defer src="/__/firebase/8.2.10/firebase-auth.js"></script>
<script defer src="/__/firebase/8.2.10/firebase-database.js"></script>
<script defer src="/__/firebase/8.2.10/firebase-firestore.js"></script>
<script defer src="/__/firebase/8.2.10/firebase-functions.js"></script>
<script defer src="/__/firebase/8.2.10/firebase-messaging.js"></script>
<script defer src="/__/firebase/8.2.10/firebase-storage.js"></script>
<script defer src="/__/firebase/8.2.10/firebase-analytics.js"></script>
<script defer src="/__/firebase/8.2.10/firebase-remote-config.js"></script>
<script defer src="/__/firebase/8.2.10/firebase-performance.js"></script>
<!--
initialize the SDK after all desired features are loaded, set useEmulator to false
to avoid connecting the SDK to running emulators.
-->
<script defer src="/__/firebase/init.js?useEmulator=true"></script>
<style media="screen">
body { background: #ECEFF1; color: rgba(0,0,0,0.87); font-family: Roboto, Helvetica, Arial, sans-serif; margin: 0; padding: 0; }
#message { background: white; max-width: 360px; margin: 100px auto 16px; padding: 32px 24px; border-radius: 3px; }
#message h2 { color: #ffa100; font-weight: bold; font-size: 16px; margin: 0 0 8px; }
#message h1 { font-size: 22px; font-weight: 300; color: rgba(0,0,0,0.6); margin: 0 0 16px;}
#message p { line-height: 140%; margin: 16px 0 24px; font-size: 14px; }
#message a { display: block; text-align: center; background: #039be5; text-transform: uppercase; text-decoration: none; color: white; padding: 16px; border-radius: 4px; }
#message, #message a { box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24); }
#load { color: rgba(0,0,0,0.4); text-align: center; font-size: 13px; }
@media (max-width: 600px) {
body, #message { margin-top: 0; background: white; box-shadow: none; }
body { border-top: 16px solid #ffa100; }
}
</style>
</head>
<body>
<div id="message">
<h2>Welcome</h2>
<h1>Firebase Hosting Setup Complete</h1>
<p>You're seeing this because you've successfully setup Firebase Hosting. Now it's time to go build something extraordinary!</p>
<a target="_blank" href="https://firebase.google.com/docs/hosting/">Open Hosting Documentation</a>
</div>
<p id="load">Firebase SDK Loading…</p>
<script>
document.addEventListener('DOMContentLoaded', function() {
const loadEl = document.querySelector('#load');
// // ????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????
// // The Firebase SDK is initialized and available here!
//
// firebase.auth().onAuthStateChanged(user => { });
// firebase.database().ref('/path/to/ref').on('value', snapshot => { });
// firebase.firestore().doc('/foo/bar').get().then(() => { });
// firebase.functions().httpsCallable('yourFunction')().then(() => { });
// firebase.messaging().requestPermission().then(() => { });
// firebase.storage().ref('/path/to/ref').getDownloadURL().then(() => { });
// firebase.analytics(); // call to activate
// firebase.analytics().logEvent('tutorial_completed');
// firebase.performance(); // call to activate
//
// // ????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????
try {
let app = firebase.app();
let features = [
'auth',
'database',
'firestore',
'functions',
'messaging',
'storage',
'analytics',
'remoteConfig',
'performance',
].filter(feature => typeof app[feature] === 'function');
loadEl.textContent = `Firebase SDK loaded with ${features.join(', ')}`;
} catch (e) {
console.error(e);
loadEl.textContent = 'Error loading the Firebase SDK, check the console.';
}
});
</script>
</body>
</html>
我什么都没碰，在我执行 npm run build 之前一切都很好。
【问题讨论】：
-
您的代码是否受版本控制？如果是这样，您可以简单地恢复到运行
npm build之前的版本，但失败了。 -
可以发
public/index.html的内容吗？ -
@emi 是的，我现在添加了
-
您的项目中有一个
public/index.html（使用 Create React App 创建？）。这用作入口点并内置在build/index.html中。它将包含初始 HTML 代码和一些用于下载应用程序其余部分的 JS。你发的那个和这个没有关系。您在构建过程中的某个地方删除了它，或者您发布了错误的。
标签： reactjs