see https://packagist.org/packages/o5/grido
JO\Nette\Grido\Components\Filters\DateRangeExt::register();
$this->dg - instance of Grido grid
$dtExample = '1.1.2014-31.5.2014';
$this->dg
->addFilterDateRangeExt('orderDate', $this->getColumnLabel('orderDate'))
->getControl()->getControlPrototype()->attrs['placeholder'] = $dtExample;
$this->dg->getFilter('orderDate')->getControl()->getControlPrototype()->attrs['title'] = $dtExample;