Is it possible to add a timepicker control using javascript (client side)?
I saw some examples using placeholders but didn't quite understood what needs to be done and if it is possible.
I could be wrong - but since the TimePicker is a server-side control I don't think it's possible to create one through javascript. However you could have one defined on the page from the start and then set visible = true or false whenever you don't want it to be displayed. Or created dynamically in code behind which is nice and easy!