Yes, React JS uses HTML, but it uses a different approach to creating and rendering HTML than traditional HTML.
In React JS, HTML is represented as a series of JavaScript objects called “virtual DOM elements.” These virtual DOM elements are created and manipulated using React’s JSX syntax, which allows developers to write HTML-like code directly in their JavaScript code.
When changes are made to the virtual DOM elements, React updates the actual DOM by selectively rendering only the components that have been changed, rather than re-rendering the entire page. This approach helps to improve performance and minimize unnecessary updates to the page.
Therefore, while React JS doesn’t use traditional HTML markup in the same way as a standard web page, it does ultimately generate and manipulate HTML elements in order to create user interfaces.
JSX is a syntax extension for JavaScript that is used in React JS to define and render user interfaces. It allows developers to write HTML-like code directly in their JavaScript files, making it easier to create and manage user interface components. In JSX, HTML-like elements are written inside a pair of curly braces within JavaScript code.
Behind the scenes, JSX code is compiled into plain JavaScript by a transpiler such as Babel, which translates the HTML-like syntax into JavaScript function calls. This allows React to create and manipulate the virtual DOM elements that represent the user interface components.
Overall, JSX is an important feature of React JS that helps to simplify the creation and management of user interface components by allowing developers to write HTML-like code directly in their JavaScript files.