The ff-select attribute allows an end user to select and edit a row.
In this example, if isImportant is truthy
In this example, if the url contains the hash #red, the class red will be added to the div. Notice this example has no Firebase emulator because changing the hash has no effect on firebase or the view-model.
_selected will add the class selected when the list item is selected. _not-selected will add the class not-selected when the list item is not selected.
See ff-select attribute