checked check box count

Question

how to get checked check box count in a div using javascript

Answer 1

var count = 0;
var inputs = myDiv.getElementsByTagName('input');
for (var i = 0, j = inputs.length; i<j; i++) {
    var input = inputs[i];
    if (input.type && input.type === 'checkbox' && input.checked) {
        count++;
    }
}
return count;

Answer 2

If you have JQuery on your site you can do it this way (assuming yor div has id='myDiv'):

$("#myDiv input:checkbox:checked").length