composer require gozoro/jquery-ajaxform

<script src='/resources/js/jquery.js' type='text/javascript'></script>
<script src='/resources/js/jquery.ajaxform.js' type='text/javascript'></script>

<form id="myform" method="POST" action="/" enctype="multipart/form-data" data-form="ajaxform">
	<input name="name" id="name" type="text" />
	<input name="files[] id="files" type="file" />
	<input type="submit" />
</form>

<script type="text/javascript">
	$(document).ready(function(){

		// Add event handler for "submitajax" event
		$('#myform').submitAjax(function(event, data, textStatus, jqXHR){

			alert('submit ajax response:' + data);

		});
	});
</script>