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