Count the number of checked checkboxes in HTML

Question

So basically i want to count the number of checkboxes that are ticked. I get my code to the point where it counts them successfully, but I want to put in an alert that shows

Answer 1

Thanks to Marlon Bernardes for this. alert(document.querySelectorAll('input[type="checkbox"]:checked').length);

If you have more than one form with different checkbox names in each, the above code will count all checkboxes in all forms.

To get over this, you can modify it to isolate by name.

var le = document.querySelectorAll('input[name="chkboxes[]"]:checked').length;