# Interface: SelectSingleContextValue Represents the value of a [SelectSingleContext](../variables/SelectSingleContext.md). ## Properties ### onDayClick? > `optional` **onDayClick**: [`DayClickEventHandler`](../type-aliases/DayClickEventHandler.md) Event handler to attach to the day button to enable the single select. #### Source [src/contexts/SelectSingle/SelectSingleContext.tsx:15](https://github.com/gpbl/react-day-picker/blob/9ad13dc72fff814dcf720a62f6e3b5ea38e8af6d/src/contexts/SelectSingle/SelectSingleContext.tsx#L15) *** ### selected > **selected**: `undefined` \| `Date` The day that has been selected. #### Source [src/contexts/SelectSingle/SelectSingleContext.tsx:13](https://github.com/gpbl/react-day-picker/blob/9ad13dc72fff814dcf720a62f6e3b5ea38e8af6d/src/contexts/SelectSingle/SelectSingleContext.tsx#L13)