ecasadolopez

Thanks, you are right, all events are lost, here is the solution:

function upDateYear() {
    const date = new Date();
    const currentYear = date.getFullYear();

    // Update HEAD content
    const head = document.getElementsByTagName("HEAD")[0];
    if (head) {
        head.childNodes.forEach(node => {
            if (node.nodeType === Node.TEXT_NODE) {
                node.nodeValue = node.nodeValue.replace(/CurrentYear/g, currentYear);
            }
        });
    }

    // Update the content of the BODY
    const body = document.getElementsByTagName("BODY")[0];
    if (body) {
        const replaceTextNodes = node => {
            if (node.nodeType === Node.TEXT_NODE) {
                node.nodeValue = node.nodeValue.replace(/CurrentYear/g, currentYear);
            } else if (node.nodeType === Node.ELEMENT_NODE) {
                node.childNodes.forEach(replaceTextNodes);
            }
        };
        replaceTextNodes(body);
    }
}