22 lines
457 B
Markdown
22 lines
457 B
Markdown
---
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title: Pad number
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tags: string,math
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expertise: beginner
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author: maciv
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cover: blog_images/flower-portrait-2.jpg
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firstSeen: 2020-10-03T23:31:08+03:00
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lastUpdated: 2020-10-03T23:31:08+03:00
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---
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Pads a given number to the specified length.
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- Use `String.prototype.padStart()` to pad the number to specified length, after converting it to a string.
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```js
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const padNumber = (n, l) => `${n}`.padStart(l, '0');
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```
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```js
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padNumber(1234, 6); // '001234'
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```
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