22 lines
529 B
Markdown
22 lines
529 B
Markdown
---
|
|
title: yesterday
|
|
tags: date,intermediate
|
|
---
|
|
|
|
Results in a string representation of yesterday's date.
|
|
|
|
- Use `new Date()` to get the current date, decrement by one using `Date.getDate()` and set the value to the result using `Date.setDate()`.
|
|
- Use `Date.prototype.toISOString()` to return a string in `yyyy-mm-dd` format.
|
|
|
|
```js
|
|
const yesterday = () => {
|
|
let t = new Date();
|
|
t.setDate(t.getDate() - 1);
|
|
return t.toISOString().split('T')[0];
|
|
};
|
|
```
|
|
|
|
```js
|
|
yesterday(); // 2018-10-17 (if current date is 2018-10-18)
|
|
```
|