Count the number of checkboxes selected without reloading the page?

Question

I\'m expanding further on this question.

I currently have an asp.net hyperlink for Select All (NumberOfCheckBoxes) which works, but what I\

Answer 1

Try this:

var inputElems = document.getElementsByTagName("input"),
    count = 0;
for (var i=0; i<inputElems.length; i++) {
    if (inputElems[i].type === "checkbox" && inputElems[i].checked === true) {
        count++;
    }
}

Answer 2

With jQuery you can:

$("input:checkbox:checked").length;