What is JSX in ReactJS?

What is JSX in ReactJS?

JSX, or JavaScript XML, is a syntax extension for JavaScript used in ReactJS. It allows you to write HTML elements and components in a syntax that looks similar to XML or HTML, within your JavaScript code. JSX makes it easier to describe what the UI should look like.

Here’s a simple example of JSX:

Here’s another example of JSX with JavaScript expressions:

In this example, the value of the name variable is inserted into the JSX expression.

It’s important to note that while JSX looks similar to HTML, it’s not HTML. It’s a syntactic sugar that is later transpiled to JavaScript by tools like Babel. This JavaScript code is what actually runs in the browser.

JSX allows developers to write React components in a way that closely resembles the structure of the UI, making the code more readable and maintainable.