Virtual DOM

A virtual DOM (VDOM) is like a copy of a website that lives in your computer's memory instead of on the actual website. The virtual DOM is made of special kinds of code called HTML, CSS, and JavaScript. It works like this: when you visit a website, your computer looks at the HTML and other code that make up the website, and it makes a copy of it in its memory. This copy is the virtual DOM. Whenever you make a change to the website, like moving something around or changing its color, the VDOM updates to reflect the changes. That way, the changes are made quickly and it doesn't slow down your computer.