- render a list of items, with a panel showing additional details for the selected item. - update the view when changes from a backend data source arrive, eit

- render a list of items, with a panel showing additional details for the selected item. - update the view when changes from a backend data source arrive, either via some sort of polling mechanism or a persistent connection. - allow the user to edit fields on the selected item. - automatically save any pending changes when navigating away from the page. AKA every CRUD app ever. You are going to need a framework (most commonly MV*) to deal with this in a maintainable way. Whether you use a vendor or create your own, you will end up with a framework.