add-days-to-date
JavaScript
const aWeekLater = new Date();
aWeekLater.setDate(aWeekLater.getDate() + 7);
console.log(`Date after a week is ${aWeekLater.toDateString()}`);
const aWeekAfter1Jan2022 = new Date('2022-01-01');
aWeekAfter1Jan2022.setDate(aWeekAfter1Jan2022.getDate() + 7);
console.log(`Date after a week of 2022-01-01 is ${aWeekAfter1Jan2022.toDateString()}`);