jQuery, combine different functions together

For example I have input button
<input type='button' class='previewButton' value='preview' />
I have general function for input method
    $resultTable.find('input').change(function() {
}
But change is not applied to button, as button reacts to click. To call change function for button:
   $resultTable.find('input.previewButton').click(function(event) {
              $(this).change();
}