JSX Syntax and Basics

1. What is JSX?

JSX (JavaScript XML) is a syntax extension for JavaScript that is commonly used with React. It allows developers to write HTML-like code within JavaScript, making it easier to create and visualize the structure of UI components.

2. JSX Syntax

The basic syntax of JSX resembles HTML. Here are some key points:

• JSX tags can be self-closing or have children.
• JSX is case-sensitive; use PascalCase for component names.
• Attributes in JSX use camelCase naming convention.

                <div>Hello, World!</div>
                <MyComponent />
                <img src="image.png" alt="My Image" />
            

3. Components and JSX

In React, components can be defined as functions or classes. JSX is typically used to define what the UI looks like by rendering components.

                function MyComponent() {
                    return <h1>Hello from MyComponent!</h1>;
                }
                
                export default MyComponent;
            

4. JS Expressions in JSX

You can embed JavaScript expressions within JSX by using curly braces {}. This is useful for rendering variables and performing calculations.

                const name = "React";
                return <h1>Hello, {name}!</h1>;
            

5. Best Practices

Here are some best practices to follow when using JSX:

• Keep JSX clean and easy to read.
• Use descriptive component names.
• Limit the complexity of return statements.
• Make use of fragments instead of unnecessary divs.

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