<form method="POST" name="myform">
<?php for($i=1;$i<=5;$i++) { ?>
<input type="hidden" name="data<?php echo $i; ?>" value="data<?php echo $i; ?>">
<?php } ?>
<input type='button' name='proses' value='Proses' -onClick='prosesData();'>
</form>

function prosesData() {
var form = document.myform;
$.ajax({
url: 'proses_data.php',
type: 'post',
data: {
data1 : fom["data1"].value,
data2 : fom["data2"].value,
data3 : fom["data3"].value,
data4 : fom["data4].value,
data5 : fom["data5"].value
},
success: function (result) {
console.log(result);
},
error: function () {
console.log("error");
}
});
}