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I'm new to ReactJS. I'm trying out the code from egghead.io and I keep getting the following error:
Uncaught SyntaxError: Unexpected token import
I have loaded babel twice now and have followed along the lesson as described, but it just won't load into the html page. Here is the codes:
index.html
<!DOCTYPE html>
<html lang = "en">
<head>
<meta charset = "UTF-8">
<title>Setup</title>
</head>
<body>
<div id = "app"></div>
<script src = "main.js"></script>
</body>
</html>
main.js
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App2';
ReactDOM.render(<App />, document.getElementById('app'))
app2.jsx
import React from 'react';
import ReactDom from 'react-dom';
class App extends React.Component {
render(){
let txt = this.props.txt
return <h1>{txt}</h1>
}
}
App.propTypes = {
txt: React.PropTypes.string,
cat: React.PropTypes.number.isRequired
}
App.defaultProps = {
txt: 'this is the default txt'
}
ReactDOM render(
<App cat={5}/>,
document.getElementById('app')
)
package.json
{
"name": "es6-react-setup",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"start": "webpack-dev-server"
},
"author": "",
"license": "ISC",
"dependencies": {
"react": "^0.14.3",
"react-dom": "^0.14.3"
},
"devDependencies": {
"babel-core": "^6.14.0",
"babel-loader": "^6.2.5"
}
}
Please help.
924
asked Jun 06 '26 21:06
After installing the Babel presets for ES6 and React you need to enable them either by creating a .babelrc file or by opting in in your package.json file.
(Confusing) docs here: http://babeljs.io/docs/usage/babelrc/
Example package.json entry enabling the presets:
"babel": {
"presets": [
[
"env",
{
"modules": false
}
],
"react"
]
}
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