17 lines
314 B
Markdown
17 lines
314 B
Markdown
---
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title: padNumber
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tags: string,math,beginner
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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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