How to apply javascript to only 1 of 2 form submit buttons within 1 form?

Hi I'm using this script to prevent users from submitting specific blank form text input fields. Does a great job but I have 2 submit buttons within 1 form and I need this to work for only 1. Is there any way to make this code below apply to 1 specific button using the button id or name?

 <script type="text/javascript">
    $('form').on('submit', function () {
        var thisForm = $(this);
        var thisAlert = thisForm.data('alert');
        var canSubmit = true;
        thisForm.find('[data-alert]').each(function(i) {
            var thisInput = $(this);
            if ( !$.trim(thisInput.val()) ) {
                thisAlert += '\n' + thisInput.data('alert');
                canSubmit = false;
            };
        });
        if( !canSubmit ) {
            alert( thisAlert );
            return false;
        }
    });
    </script>