What is virtual DOM in React.Js? What is the use ?

Question

Can anyone give example for React js routing system?

Answer 1

• ReactJS does not update the Real DOM directly but it updates the Virtual DOM.
• Virtual DOM is an in-memory representation of Real DOM. It is a lightweight JavaScript object which is a copy of Real DOM.
• ReactJS maintains two virtual DOM, one with the updated state Virtual DOM and other with the previous state Virtual DOM. And, It mainly uses for increasing the rendering DOM speed.