DropDown inside DataTable

ekhiani

I have created a datatable which consists of setup of an appointment system.
This datatable has many dropdown lists inside it say StartTime, EndTime Duration etc. On Load, I want to populate the table from the database via ajax so I just want to know How do I display the values of last selected setup options of dropdown inside the table. In other words how do I access dropdown which is inside the table to display the last selected option.