How to get Column checkboxes count on the page?

[vinothkkl123]

In Slickgrid, I have check boxes in Header Row in 3 Columns.
I need to get the total check boxes in 3 columns and how many are checked?
E.g Header Row Column -1 - 100 Checkboxes
Header Row Column 2 - 25 Checkboxes
Header Row Column 3 - 75 Checkboxes

Checked checkboxes - Column 1 = 50
Column 2 = 10
Column 3 = 35

So Overall 200 Checkboxes on the Page. How we can get the overall checkboxes count on the page and get the checked checkboxes count on each column and all the columns?

Any Idea?