cloud_bbb/ts/Manager/NewRoomForm.tsx

import React, {useState} from 'react';

type Props = {
    addRoom: (name: string) => void;
}

const NewRoomForm: React.FC<Props> = (props) => {
	const [name, setName] = useState('');

	function addRoom(ev: React.FormEvent) {
		ev.preventDefault();

		props.addRoom(name);

		setName('');
	}

	return (
		<form action="#" onSubmit={addRoom}>
			<input
				className="newgroup-name"
				value={name}
				placeholder={t('bbb', 'Room name')}
				onChange={(event) => {setName(event.target.value);}} />

			<input type="submit" value={t('bbb', 'Create')} />
		</form>
	);
};

export default NewRoomForm;