Question

In effect, I want to say this:

$('#results1').html($.post("videoloaderurl.php", { id: byName } ));

Obviously, the code above doesn’t work.
where results1 is a div and videoloaderurl.php returns html.

Answer 1

You should provide success callback function for post function, which could add retrived data to the div.

$.post("videoloaderurl.php", { id: byName }, function(data) {
  $('#results1').html(data);
});