Значение флажки JQUERY
if ($('#check_id').is(":checked"))
{
// it is checked
}
Fantastic Fly
if ($('#check_id').is(":checked"))
{
// it is checked
}$('#checkbox_id:checked').val();
//if checkbox is selected than gets its valueconsole.log($('input[name="locationthemes"]:checked').serialize());
//or
$('input[name="locationthemes"]:checked').each(function() {
console.log(this.value);
});$("input[type='checkbox']").val();
$('#check_id').val();$.each(arrayValues, function(i, val){
$("input[value='" + val + "']").prop('checked', true);
});