React does not directly produce HTML code as an output, but it does employ HTML syntax when constructing its own components. This creates a Virtual DOM (Document Object Model) that can then be utilized to render HTML content. The Virtual DOM permits React to work more quickly than if it were to directly generate HTML code, as it can rapidly update the DOM without having to re-render the entire page.
Aside from generating content for webpages, React can also be utilized to create mobile applications with the help of libraries such as React Native and Expo. These libraries enable developers to write code using the same principles as with web development, but instead of producing HTML content they generate code for mobile platforms such as iOS and Android.
To conclude, while React does not directly produce HTML code, it does employ HTML syntax when creating components that are then rendered into the DOM, enabling developers to quickly develop dynamic webpages or mobile applications without having to write raw HTML code each time.