React Element

Elements are the smallest building blocks of React apps.

const name = <h1>Hello, World!</h1>

This variable name carries html, css and javascript. Three in one. Looks like html. But no.

const name = <h1 className={textAlign: center}> Hello  {}

You take a DOM quantum (pseudo, because jsx converts to html), assign a variable to it, and work with that variable. This variable is a React Element.

• Render an Element into the DOM
• Elements constitute a component.

reactjs.org