In React, you can pretty print JSON data by using the "JSON.stringify()" method with a "null" value for the "replacer" parameter and a number value for the "space" parameter. This will format the JSON data with indentation and line breaks for readability. For example: JSON.stringify(myData, null, 2).

Uncontrolled components are components that store their own state and are updated using refs. They are often used for simple form inputs, where managing the state in a parent component would be unnecessary overhead.

In React Router v4, you can implement a default or NotFound page by using a component to render the first matching child , and adding a as the last child. This route will match any path that has not been matched by other routes, and render the NotFound component.

Shallow Renderer is a tool for simulating component rendering without deep rendering. It can be used for testing components in isolation and allows developers to easily check the output of a component's render method.

Yes, you can import an SVG file as a React component using the '@svgr/webpack' loader or the 'svg-react-loader' package. These tools allow you to import an SVG file as a React component, which you can then use in your React application just like any other component. This can be useful for creating reusable SVG icons or graphics.

In React, it is possible to use the library for non-HTML rendering, such as SVG or canvas. React provides a flexible programming interface for creating components and managing state, and it can be used to generate any kind of output, not just HTML. React is also used for building mobile apps with React Native, which uses the same programming model as React for building UIs on iOS and Android platforms.

In React 16 and later versions, Array, Strings, and Numbers can be rendered using JSX syntax. For example, an array can be rendered using the map method, a string can be rendered using curly braces, and a number can be rendered directly.

In React, you can find the version of React at runtime in the browser by using the "React.version" property in the console. This will display the current version of React that is being used on the page.

Default props are props that are assigned default values in a React component. These default values are used if the prop is not passed to the component from the parent or if it is passed as undefined. Default props are defined using the defaultProps property on the component class.

Windowing is a technique used in React to optimize performance when rendering a large data set. Windowing involves rendering only a subset of the data that is currently visible on the screen, and dynamically rendering additional data as the user scrolls or interacts with the UI. This technique can significantly improve the performance of applications that need to render large amounts of data, such as tables, lists, and grids.