22 lines
515 B
Markdown
22 lines
515 B
Markdown
---
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title: Round number to given precision
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tags: math
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cover: yellow-white-mug-1
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firstSeen: 2017-12-17T17:55:51+02:00
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lastUpdated: 2020-10-22T20:24:30+03:00
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---
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Rounds a number to a specified amount of digits.
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- Use `Math.round()` and template literals to round the number to the specified number of digits.
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- Omit the second argument, `decimals`, to round to an integer.
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```js
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const round = (n, decimals = 0) =>
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Number(`${Math.round(`${n}e${decimals}`)}e-${decimals}`);
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```
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```js
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round(1.005, 2); // 1.01
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```
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