By looking at your comment,
You can iterate through jQuery for each repeater date picker input, refer below code:
<div class="wrapper">
<asp:repeater runat="server" id="rpfollowup" xmlns:asp="#unknown">
...
Your ItemTemplate Snippet
...
</asp:repeater>
</div>
I have added div with class
wrapper
to your repeater. Now I will iterate inside that wrapper div to find our datepicker input control and one by one initialize them with datepicker plugin with their related IDs.
$(".wrapper input[id$=datepicker]").each(function(index) {
var controlID = $(this).attr('id');
$(this).datepicker({
changeMonth: true,
changeYear: true
})
});
I hope you understand!