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The Reach Router Tutorial: A Quickstart Guide for Routing in React Apps

The Reach Router Tutorial: A Quickstart Guide for Routing in React Apps

In my recent project, I used Reach Router as it is the simplest way to implement routing in a React app. It provides an easier alternative to React Router, which I have used in the past. Here is a quick 5-minute tutorial to get started with Reach Router.

Installation

To get started, install Reach Router using the following command:

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npm install @reach/router

In case you are unfamiliar with the @ syntax, it is an npm feature that allows the use of scoped packages.

Next, import Reach Router in your project:

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import { Router } from '@reach/router'

Basic Usage

I typically use Reach Router in the top-level React file, such as index.js in a create-react-app installation. Wrap all the components that you want to appear inside the Router component:

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ReactDOM.render(
 <Router>
   <Form path="/" />
   <PrivateArea path="/private-area" />
 </Router>,
 document.getElementById('root')
)

The path attribute allows you to set the URL path for each component. When you type that path in the browser URL bar, Reach Router will display the corresponding component.

By default, the / path is the index route and serves as the home page when no specific URL or path is specified beside the app domain.

Setting a Default Route

When a user visits an URL that does not match any defined route, Reach Router will automatically redirect to the / route by default. To handle this scenario and display a custom “404” message, you can add a NotFound component with the default attribute:

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<Router>
 <Form path="/" />
 <PrivateArea path="/private-area" />
 <NotFound default />
</Router>

Programmatically Changing Routes

For programmatically changing the route in your app, you can make use of the navigate function from Reach Router:

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import { navigate } from '@reach/router'

navigate('/private-area')

Linking to Routes in JSX

To create links to your routes using JSX, you can utilize the Link component provided by Reach Router:

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import { Link } from '@reach/router'

<Link to="/">Home</Link>
<Link to="/private-area">Private Area</Link>

URL Parameters

You can add parameters to your routes using the :param syntax:

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<Router>
 <User path="users/:userId" />
</Router>

In the User component, you can access the userId parameter as a prop:

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const User = ({ userId }) => (
 <p>User {userId}</p>
)

Nested Routes

Reach Router allows you to define nested routes by specifying them within a parent route component:

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<Router>
 <Form path="/" />
 <PrivateArea path="/private-area">
   <User path=":userId" />
 </PrivateArea>
</Router>

In this example, the /private-area/23232 route would point to the User component, passing 23232 as the userId.

Additionally, you can allow a component to define its own routes by using the /* wildcard after the route:

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<Router>
 <Form path="/" />
 <PrivateArea path="/private-area/*" />
</Router>

Inside the PrivateArea component, you can import Router again and define its own set of sub-routes:

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// Import Router inside PrivateArea component
<Router>
 <User path="/:userId" />
</router>

Any route starting with /private-area/something will be handled by the User component, with the remaining part sent as the userId prop.

To display something in the /private-area route, you also need to add a / handler in the PrivateArea component:

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//component PrivateArea
<Router>
 <User path="/:userId" />
 <PrivateAreaDashboard path="/" />
</router>

Tags: reach router, react router, routing in react, react app, react tutorial