$('.myform').on('submit', function(){
var fd = new FormData(this);
$.ajax({
type: "POST",
url : "send.php",
data: fd,
});
});
.serialize()
<input type="hidden" class="name-option" name="option[1][name]" value="РАЗМЕР">
<input type="hidden" class="val-option" name="option[1][val]" value="XL">
<input type="hidden" class="name-option" name="option[2][name]" value="РАЗМЕР">
<input type="hidden" class="val-option" name="option[2][val]" value="XL">
$('.myform').on('submit', function(){
var $thisForm = $(this);
$.ajax({
type: "POST",
url : "send.php",
data: $thisForm.serialize(),
});
});