html
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<!DOCTYPE html>
<html>
<head>
<title>React app (created by Calvin) Sept 2019</title>
</head>
<body>
<pre id="test"></pre>
<div id="app"><div>Loading ....</div></div>
<script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
<script src="https://unpkg.com/react@16/umd/react.development.js" crossorigin></script>
<script src="https://unpkg.com/react-dom@16/umd/react-dom.development.js" crossorigin></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-router-dom/5.2.0/react-router-dom.js"></script>
</body>
</html>
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css
css
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body {
}
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js
js
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//</script><script type="text/babel">
const {useState, useEffect} = React;
const {HashRouter, Switch, Route, Link} = ReactRouterDOM;
const App = () => {
return (
<HashRouter>
<div>
<ul>
<li>
<Link to="/">Home</Link>
</li>
<li>
<Link to="/about">About</Link>
</li>
<li>
<Link to="/dashboard">Dashboard</Link>
</li>
</ul>
<hr />
{/*
A <Switch> looks through all its children <Route>
elements and renders the first one whose path
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