Answers for "jquery get checked boxes"

jquery get value checkbox checked

console.log($('input[name="locationthemes"]:checked').serialize());

//or

$('input[name="locationthemes"]:checked').each(function() {
   console.log(this.value);
});

jquery get selected checkboxes

var selected = [];
$('#checkboxes input:checked').each(function() {
    selected.push($(this).attr('name'));
});