<form id="form">
	<input id="upload" type="file">
</form>

function uploadFile (url, data)
{
	return new Promise(
		function (resolve, reject)
		{
			$.ajax(
				{
					type: 'POST',
					url: url,
					data: data,
					processData: false,
					contentType: false,
					dataType: 'json'
				}
			).done(
				resolve
			).fail(
				function (xhr, status, errorThrown)
				{
					reject(errorThrown)
				}
			);
		}.bind(this)
	);
};

$('#upload').off().change(
	function (e)
	{
		if ($('#upload').val())
		{
			uploadFile(
				'url',
				new FormData(
					document.getElementById('form')
				)
			).then(
				function (result)
				{
					console.info('result', result);
				}
			);
		}
	}
);