freeCodeCamp/guide/english/certifications/front-end-libraries/react/add-comments-in-jsx/index.md

---
title: Add Comments in JSX
---
## Add Comments in JSX
You can comment as you used to do with code blocks in JavaScript `/* some JS code */` but they need to wrapped by curly braces to add comments in JSX:
For example:
* Single-line comment:
```jsx
{/*<h1>Hanoi University of Science</h1>*/}
```

* Multi-line comments:
```jsx
{/*
<h1>Hanoi University of Science</h1>
<p>Falculty of Mathematics, Mechanics and Informatics</p>  
*/}
```

Notice: You can't use HTML comment in JSX like this:
```html
<!-- not working -->
```