<form id="addpro" method="GET" action="https://site.com">
<input type="hidden" name="id" value="234">
<input type="submit" value="Button">
</form>
<script>
$(document).ready(function(){
$("form#addpro").submit(function(){
var formData = new FormData(this);
var $this=$(this);
$.ajax({
url: 'procces.php',
type: 'POST',
data: formData,
async: false,
success: function (data) {
alert(data);
$this.submit();
},
cache: false,
contentType: false,
processData: false
});
return false;
});
});
</script>Если вы не смотрели