📱 How React Native Works

You write JavaScript

You describe what you want: "a blue button that says Hello."

One set of instructions — not two.

A little brain runs it

Inside the app, a JavaScript engine reads your instructions and figures out what to show.

A messenger carries the words

Your instructions are passed over to the phone's own building blocks.

This messenger is called the "bridge."

The phone builds the REAL thing

Not a fake picture of a button — the phone makes its actual native button.