`;
}
function addDays() {
const start = new Date(document.getElementById(‘addStartDate’).value);
const days = parseInt(document.getElementById(‘daysToAdd’).value);
if (!start || !days) return;
const result = new Date(start);
result.setDate(result.getDate() + days);
document.getElementById(‘addResult’).innerHTML = `
`;
}
function subtractDays() {
const start = new Date(document.getElementById(‘subStartDate’).value);
const days = parseInt(document.getElementById(‘daysToSubtract’).value);
if (!start || !days) return;
const result = new Date(start);
result.setDate(result.getDate() – days);
document.getElementById(‘subResult’).innerHTML = `
