How JSX Works in ReactJS (With Live Example)

Understand JSX – how HTML and JavaScript are mixed inside React components.

JSX stands for JavaScript XML. It allows developers to write HTML elements directly within JavaScript code, making React components much easier to visualize and maintain.

In today’s post, we will explore the basics of JSX and how it differs from traditional HTML. We’ll create a simple example that returns an HTML heading using JSX syntax.

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Understanding JSX is crucial because, under the hood, React transforms JSX into React.createElement() calls that the browser can understand. We will also learn the rules of JSX like enclosing elements within a single parent, and using className instead of class. This knowledge will make writing React components feel as natural as writing regular HTML.

Code Step 1:-

```
     FUNCTION App() {
```

     RETURN <h1>Welcome TO ReactJS Learning. </h1>;

```
}
```
```
   export DEFAULT App;
```

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FAQ (Frequently Asked Questions)

What is the concept of ReactJS?

js that allows developers to write HTML elements. Rendering Elements in React involves efficiently updating the user interface by creating and updating virtual representations of the UI components. Components in React are modular, reusable building blocks for UI elements.

What is ReactJS for beginners?

React is a JavaScript library for building user interfaces. React is used to build single-page applications. React allows us to create reusable UI components.

Why is ReactJS used?

ReactJS is used to build dynamic and interactive user interfaces for websites and web applications, offering advantages like component reusability, performance enhancements, and a large community supporting its use. It simplifies front-end development, making it easier to create complex web applications with a smooth user experience.

Vijay Kumar

Hi, This is Vijay Kumar behind the admin and founder of w3web.net. I am a senior software developer and working in MNC company from more than 8 years. I am great fan of technology, configuration, customization & development. Apart of this, I love to write about Blogging in spare time, Working on Mobile & Web application development, Salesforce lightning, Salesforce LWC and Salesforce Integration development in full time. [Read full bio] | | The Sitemap where you can find all published post on w3web.net