[React Router v4] Create Basic Routes with the React Router v4 BrowserRouter

React Router 4 has several routers built in for different purposes. The primary one you will use for building web applications is the BrowserRouter. In this lesson you will import the BrowserRouter and create some basic Route components.

After create your app with 'creat-react-app', we going to install the react-router-dom:

npm i -D react-router-dom@next

Import BrowserRouter:

import {
    BrowserRouter as Router,
    Route
} from 'react-router-dom';

Using Router:

        <Router>
            <div>
                <Route exact path="/" component={App}></Route>
                <Route path="/about" component={About}></Route>
                <Route
                    strict
                    path="/about/"
                    render={() => <h2>About render</h2>}></Route>
                <Route
                    path="/demo"
                    children={({match}) => match && <h2>demo</h2>}></Route>
            </div>
        </Router>

Here we use three different ways to render a component or Html to the DOM:

1. Using Component:

                <Route exact path="/" component={App}></Route>
                <Route path="/about" component={About}></Route>

Here the 'exact' flag tells that it should match only '/'.

2. Using render:

we can just render some html:

                <Route
                    strict
                    path="/about/"
                    render={() => <h2>About render</h2>}></Route>

3. Using children:

                <Route
                    path="/demo"
                    children={({match}) => match && <h2>demo</h2>}></Route>

By default what we write into 'children' will be rendered no matter which path it matchs. 

If for example, we only want it to be shown when match '/demo', we can check whether there is a 'match' object exists on props.