+- Tags: date,intermediate
+- [online resize image](https://www.onlineresizeimage.com/)
+Calculates the date of `n` days from the given date, returning its string representation.
+- Use `new Date()` to create a date object from the first argument.
+- Use `Date.prototype.getDate()` and `Date.prototype.setDate()` to add `n` days to the given date.
+- Use `Date.prototype.toISOString()` to return a string in `yyyy-mm-dd` format.
+const addDaysToDate = (date, n) => {
+ const d = new Date(date);
+ d.setDate(d.getDate() + n);
+ return d.toISOString().split('T')[0];
+addDaysToDate('2020-10-15', 10); // '2020-10-25'
+addDaysToDate('2020-10-15', -10); // '2020-10-05'
