What can you build with React first?
Make one time picker with two sample slots and a confirmation area. A component is a reusable piece of the interface. The same slot component can display different times.
Put Tuesday at 3:00 and 3:30 on a private sample screen. Make the selected slot clear. Try the page at phone width and use the keyboard to change the selection. For this first demo, use invented values and no data service.
What does React remember when someone picks a time?
React state remembers values the interface needs while a component is in use. A selection in component state alone disappears on a fresh page load. A shared reservation needs a separate saved record.
| What happened | What the interface knows |
|---|---|
| A time was selected | Show the selected time. The visitor can still choose another one. |
| A request was sent | Show that the reservation is being checked. Keep the chosen time visible. |
| The server confirmed the save | Show the saved time from the reply or the record the app reads back. |
| The reply went missing | Keep the result unconfirmed until the app can check what was saved. |
When do you need more than the interface library?
You need a way to decide what appears at each address and where the server rules live. A React framework can organize those decisions. A browser-only build can also call a separate API.
Check the project you already have. A React framework may already provide page routing and server rendering. A build tool can prepare a browser-only project for hosting as files. React can also produce HTML on a server when your setup uses its server-rendering APIs.
When you add a real reservation, check that the server validates the time and keeps one saved booking even if two people choose the same slot. Use your private test copy to compare what the page shows with what is stored.
What moves with your React components?
React has an MIT license. Keep your component files, assets and dependency versions. Server endpoints, authentication and saved bookings belong to the wider app and need their own migration plan.
If you change frameworks, try moving one component first. Check which imports rely on the old framework for routing, images or fetching data. Verify the result in a browser. Budget separately for hosting and any API or database the component calls.