I am having two option sets one is for year and one is for month.
based upon the selection i need to populate days with the last date of that particular selected month.
i.e if I select 2020 as year and June as month.
then I should display the label Day 1 as 1 monday to Day 30 as 30 Tuesday(I created the field Day 1 to Day 30)
kindly provide some links as i am new to use Date time fields in javascript