How to call view block on click?
Try this code

$.ajax({
    url: Drupal.settings.basePath + 'views/ajax',
    type: 'POST',
    dataType: 'json',
    data: 'view_name=custom_package_form&amp;view_display_id=block_56',
    success: function(response) {
      var output = response[1].data;
      $("#output-venue").html(output);
    },
    error: function(data) {
        alert('An error occured!');
    }
});