Answers for "how to get the value of checked checkbox in jquery on the click of the button"

jquery get value checkbox checked

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

//or

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

how to get checked value of checkbox in jquery

$("#check").change(function () {
            if (this.checked) {
                //I am checked
                name_val = $('#name').val();
                $('#player').val(name_val);
            } else {
                //I'm not checked
                $('#player').val('');
            }
        });