function handlemenugroup (ev) { const nodes = document.querySelectorAll('.menugroup');
nodes.forEach(function(node) { if (node !== ev.target) { node.checked = false;
} }) }

document.addEventListener("DOMContentLoaded", () => { br const nodes = document.querySelectorAll('.menugroup'); nodes.forEach(function(node) { br node.addEventListener('change', handlemenugroup) }) });