$('#goButton').click(function(e){
  $('#hello').empty();
  $('#hello').append($('<img />').attr({
    src: "http://www.vision-call.co.uk/images/stories/events/sample.jpg",
    onload: "alert('hello');"
  }));
});


$('img').load(function() {
  alert("jquery");
});

$('#goButton').click(function(e){
  $('#hello').empty();
  var newImage = $('<img />').attr({
    src: "http://www.vision-call.co.uk/images/stories/events/sample.jpg",
    onload: "alert('hello');"
  }).on('load', function() {
    alert("jquery");
  });

  $('#hello').append(newImage);
});

$('#goButton').click(function(e){
  $('#hello').empty();
  $('#hello').append($('<img />').attr({
    src: "http://www.vision-call.co.uk/images/stories/events/sample.jpg",
    onload: "alert('hello');"
  })).promise().done(function(){alert("jquery");});
});

$('#goButton').click(function(e){
    $('#hello').empty();
    $('#hello').append($('<img />').attr({
        src: "http://www.vision-call.co.uk/images/stories/events/sample.jpg",
        onload: "loader()"
    }));
});

var loader = function() {
    alert('hello');
}