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[英]Uncaught SyntaxError: Cannot use import statement outside a module for React
[英]REACT-APP Uncaught SyntaxError: Cannot use import statement outside a module
每当我尝试在浏览器上打印它时,我总是在标题“Uncaught SyntaxError:无法在模块外使用导入语句”上出现错误,然后再问这个问题,我尝试了与此问题类似的所有解决方案,包括添加“类型”:”模块”,到我的 json 包但似乎没有工作,我还添加了“包”,但仍然没有打印出我的所有脚本都已正确配置我使用 ecma6script 和最新版本的 react,
下面是我的 hmtl 代码
<head>
<link rel="stylesheet" href="style.css">
</head>
<body>
<div id="root"></div>
<script src="indexx.js"></script>
</body>
</html>```
and here is my reactcode
```import React from "react";
import ReactDom from "react-dom";
ReactDom.render(<h1>hello world</h1>, document.getElementById("root"));```
below is my json package
```{
"name": "asa-app",
"version": "0.1.0",
"private": true,
"dependencies": {
"@testing-library/jest-dom": "^5.11.5",
"@testing-library/react": "^11.1.1",
"@testing-library/user-event": "^12.2.0",
"react": "^17.0.1",
"react-dom": "^17.0.1",
"react-scripts": "4.0.0",
"web-vitals": "^0.2.4"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject"
},
"eslintConfig": {
"extends": [
"react-app",
"react-app/jest"
]
},
"browserslist": {
"production": [
">0.2%",
"not dead",
"not op_mini all"
],
"development": [
"last 1 chrome version",
"last 1 firefox version",
"last 1 safari version"
]
}
}```
您正在尝试直接从浏览器启动未编译的源代码。 要启动一个可行的应用程序,您可以执行以下操作:
npm start
- 在 localhost:3000 上npm start
DEV 服务器npm run build
- PROD 构建,将源代码编译到build/
文件夹中。 在那里你会找到编译好的 JS、CSS 和 index.html 来启动。
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