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let kodPocztowy = document.querySelector("input#countryPostcode"); var andrzej = function() { var getClosest = function(elem, selector) { for (; elem && elem !== document; elem = elem.parentNode) { if (elem.matches(selector)) return elem; } return null; }; getClosest(); document.addEventListener('click', function (event) { // If the clicked item is an `.accordion-toggle` get the parent `.accordion` if ( event.target.attr.contains('[id="delivery_5"]') ) { // Get the parent with the `.accordion` class var parent = getClosest(event.target, '.radio'); if (kodPocztowy.value == "11-111") { parent.style.display = "none"; } } }, false); }; window.addEventListener("click", andrzej);