如何在es6中编写子组件（子组件）？

Question

I am trying to refactor my react app from es5 to es6, however in render function I've kept my and components, when I refactor to ES6 these components are not displayed in my page. Searched in google but couldn't get the proper solution, below is my code

 'use strict'; import React from 'react'; import { Router, Route, Link, hashHistory } from 'react-router'; import Header from '../Header/header'; import Footer from '../Footer/footer'; export class Main extends React.Component { render(){ return ( <div> <Header /> <div> {this.props.children} </div> <Footer /> </div> ); } } 

below is my Footer:

 'use strict'; import React from 'react'; export class Footer extends React.Component { render(){ return ( <div> <footer> <div className="panel panel-default"> <div className="panel-footer container"> &copy; {year} All rights reserved </div> </div> </footer> </div> ); } } 

Header and Footer components are not being rendered.

Answer 1

Either export your Header and Footer classes with default like this

export default class Footer

Or import it this way:

import {Footer} from '../pathToFile'

So there are two ways to export in ES6. The first one is a default export which is written like this:

export default someVariable

If you export a variable this way, the you can import it in any other file this way:

import someVariable from '<path>'

The catch here is that you can even import your variable with a different name. Hence,

import someVariable2 from '<path>'

will also give me someVariable. But there is a restriction as well. You can have only one export default in a single file

Now the other way of exporting is the Named Export like this:

export somevariable

In this case, you need to import it this way:

import {someVariable} from '<path>'

In this case, the variable name ca't be changed. You need to import it with the same name which you mentioned while exporting.