26 lines
739 B
Markdown
26 lines
739 B
Markdown
---
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title: Number to fixed-point notation without trailing zeros
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tags: math,string
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expertise: beginner
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author: chalarangelo
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cover: blog_images/red-succulent.jpg
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firstSeen: 2022-05-10T05:00:00-04:00
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---
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Formats a number using fixed-point notation, if it has decimals.
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- Use `Number.prototype.toFixed()` to convert the number to a fixed-point notation string.
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- Use `Number.parseFloat()` to convert the fixed-point notation string to a number, removing trailing zeros.
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- Use a template literal to convert the number to a string.
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```js
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const toOptionalFixed = (num, digits) =>
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`${Number.parseFloat(num.toFixed(digits))}`;
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```
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```js
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toOptionalFixed(1, 2); // '1'
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toOptionalFixed(1.001, 2); // '1'
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toOptionalFixed(1.500, 2); // '1.5'
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```
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