27 lines
687 B
Markdown
27 lines
687 B
Markdown
---
|
|
title: Days ago
|
|
type: snippet
|
|
language: javascript
|
|
tags: [date]
|
|
cover: u-got-this
|
|
dateModified: 2022-01-30T11:48:07+03:00
|
|
---
|
|
|
|
Calculates the date of `n` days ago from today as a string representation.
|
|
|
|
- Use the `Date` constructor to get the current date.
|
|
- Use `Math.abs()` and `Date.prototype.getDate()` to update the date accordingly and set to the result using `Date.prototype.setDate()`.
|
|
- Use `Date.prototype.toISOString()` to return a string in `yyyy-mm-dd` format.
|
|
|
|
```js
|
|
const daysAgo = n => {
|
|
let d = new Date();
|
|
d.setDate(d.getDate() - Math.abs(n));
|
|
return d.toISOString().split('T')[0];
|
|
};
|
|
```
|
|
|
|
```js
|
|
daysAgo(20); // 2020-09-16 (if current date is 2020-10-06)
|
|
```
|