Difference between js and jsx

The difference between JS (JavaScript) and JSX (JavaScript XML) primarily lies in their purpose and syntax within the context of web development, particularly with libraries like React.
JavaScript (JS):
Core Language: JavaScript is a high-level, interpreted programming language used to create interactive and dynamic content on websites. It is the fundamental language of the web alongside HTML and CSS.
Functionality: JS handles logic, data manipulation, event handling, and communication with servers. It can be used independently of any specific framework or library.
File Extension: Typically uses the .js file extension.
JSX (JavaScript XML):
Syntactic Extension: JSX is a syntax extension for JavaScript, primarily used with React, that allows you to write HTML-like structures directly within your JavaScript code.
Purpose: It makes writing React components and defining their UI structure more intuitive and readable by allowing you to embed markup directly into your JavaScript.
Transpilation: Browsers do not natively understand JSX. It needs to be "transpiled" into regular JavaScript by a tool like Babel before it can be executed in a browser. This transpilation converts JSX elements into React.createElement() calls.
File Extension: Often uses the .jsx file extension to indicate the presence of JSX syntax, although it can also be used in .js files if the project configuration allows for it.
In summary:
JS is the core programming language that provides the functionality and logic.
JSX is a syntax extension built on top of JS, specifically for defining UI structures in a more declarative way within frameworks like React. It simplifies the creation of UI components by allowing a blend of JavaScript and HTML-like syntax.