Why does React exist?

React was built to solve the problem of manually syncing many UI elements that depend on the same data.

Instead of telling each part of the interface what to update, developers describe the UI for a given state and let React handle the changes.

By managing DOM updates, React keeps connected views like dashboards, notification counts, sidebars, and data tables more predictable.

This state-driven model underpins hooks like useState and useEffect, helping teams reduce bugs and build more maintainable frontends.