Update include(file.php) by ajax

I need to execute include(file.php) which echo some data every time I press the button. Tried to call it from ajax

$.ajax({
    type: 'get',
    url: 'link/file.php',
    data: {
      'update': 1
    },
 });` 

But it doesn't update (only on page refresh). Can I somehow update this php echo every time I recieve get request or press the button? Thank you!