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ReactJs JSX

Introduction

JSX is an extension to JavaScript syntax that allows you to write HTML-like code in your JavaScript. JSX stands for JavaScript XML and provides a range of new features that make coding with React easier.

Syntax

JSX syntax is similar to HTML but with some minor differences. A JSX element starts with an HTML-like tag followed by an optional list of attributes and then its content. Here is an example:

const element = <h1 className="title">Hello, World!</h1>;

Example

import React from 'react';

const element = (
  <div>
    <h1>Hello, World!</h1>
    <p>This is my first React JSX page.</p>
  </div>
);

ReactDOM.render(
  element,
  document.getElementById('root')
);

Output

<div>
  <h1>Hello, World!</h1>
  <p>This is my first React JSX page.</p>
</div>

Explanation

The above code is a simple example of JSX usage. The import React from 'react'; statement imports the React library. The const element = (...) statement creates a JSX element and assigns it to a constant named element. Finally, the ReactDOM.render(...) method is used to render the element to the page.

Use

JSX is primarily used in React to create user interfaces. JSX allows you to create reusable UI components that can be used throughout your application.

Important Points

  • JSX elements must have a single parent element.
  • JSX elements are not HTML elements, but rather React components.
  • JSX expressions can be used inside curly braces ({}).

Summary

JSX is an extension to JavaScript syntax that allows you to write HTML-like code in your JavaScript. JSX is used to create reusable UI components in React. JSX provides a range of new features that make coding with React easier. Understanding JSX is essential to becoming proficient in React development.

Pros & ConsComponents
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