checkbox is checked with jQuery

How do I know if a checkbox is checked with jQuery?

HTML

<div id="Result" style="color: Red;">
    </div>
    <div id="MyFormID">
        <input type="checkbox" />Car<br />
        <input type="checkbox" />Van<br />
        <input type="checkbox" />Bus<br />
    </div>
    <input type="button" id="btnSubmit" value="Submit" />

JavaScript

$(document).ready(function () {
            $('#btnSubmit').click(function () {
                var checkBoxCheckedCount = $('#MyFormID').find('[type="checkbox"]:checked').length;
                $('#Result').html(checkBoxCheckedCount > 0 ? checkBoxCheckedCount + ' Check Box Is Checked' : 'All Check Box Is UnChecked');
            });
        });