Posted in react
140
12:10 am, October 12, 2021

How do Self-Closing JSX Tags Work?

So in JSX all the tags must be closed, other wise it can break the element.

for example: <div> must have a closing </div> and also for elements like <br> and <hr> must include the /.

So make sure you do your single elements with a / at the end, like <br /> and <hr /> rather than the normal html versions of them. 

HTML

<div id="root"></div>

Scripts

<script src="https://cdnjs.cloudflare.com/ajax/libs/react/18.0.0-alpha-5fa4d79b0-20211008/umd/react.production.min.js" integrity="sha512-5PVmWGoNJocWPdQJmJd1aRbz3cFcFgXctWKLWcitqtgX64jF+ttfg9g2oLltmeQ1HUo3gT6QchaMK3h+S+JG4Q==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/18.0.0-alpha-5fa4d79b0-20211008/umd/react-dom.production.min.js" integrity="sha512-pUsjUv+9XgkTn+UbLyNIT4YNZPF2p0E45FBKmDL7Ti8iovYwp2CUkQs6Q7J9y5scLxWaOM+T5jJc0ls+WHUcmQ==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
<script type="text/babel">
const JSX = (
  <div>
    <h2>Welcome to React!</h2> <br />
    <p>Be sure to close all tags!</p>
    <hr />
  </div>
);
ReactDOM.render(JSX, document.getElementById('root'))
</script>

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