We need to create a reactjs component. We do this in a text/babel
script since we're using javascript ES6 features and JSX.
class Hello extends React.Component {
render() {
return (
<div>Hello!</div>
);
}
}
We create a javascript class that extends React.Component and give it a render
function that returns some JSX. In this case we're returning a simple div.
Once we've created that we call ReactDOM.render
with the HTML, in this case our new Hello
tag, and as a second paramter we have the root div in the HTML body:
ReactDOM.render(
<Hello />,
document.getElementById('root')
);
Here's all the code:
<html>
<head>
<script src="https://unpkg.com/react@16.3.1/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom@16.3.1/umd/react-dom.development.js"></script>
<script src="https://unpkg.com/babel-standalone@6.26.0/babel.js"></script>
<script src="https://unpkg.com/prop-types@15.6.1/prop-types.js"></script>
</head>
<body>
<div id="root"></div>
</body>
<script type="text/babel">
class Hello extends React.Component {
render() {
return (
<div>Hello!</div>
);
}
}
ReactDOM.render(
<Hello />,
document.getElementById('root')
);
</script>
</html>