I am new to react and I tried the following code
person.js
const element = <h1>Hello world</h1>;
export default element;
App.js
import React, { Component } from 'react';
import ReactDOM from 'react-dom'
import Person from '../src/person/person';
function Hello() {
return Person.element;
}
class App extends Component {
render() {
return (
<div className="App">
<Hello></Hello>
</div>
);
}
}
export default App;
But getting the below errors
work/my-app/src/person/person.js 3:17 error 'React' must be in scope when using JSX react/react-in-jsx-scope
When I changed to a simple hello word as below, then it works fine.
person.js
const element = 'hello world';
export default element;
I tried with different ways by checking different forum
The use of HTML within JS code is known as JSX. The <h1>...</h1>
is JSX. You need to import React
before you use JSX. Simply shift the import statements before any use of JSX.
person.js
import React, { Component } from 'react';
import ReactDOM from 'react-dom'
import Person from '../src/person/person';
const element = <h1>Hello world</h1>;
export default element;
You need to import React in every file that exports a component (App in this case).
The latest React 17 Version: No need to include React in the scope
If you are struggling with ESlint or run-time CRA warnings, follow these temporary steps to fix until CRA v4 is released: https://github.com/facebook/create-react-app/issues/9850
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