https://github.com/dy/pretty-number

Format number to more humane form than toFixed
https://github.com/dy/pretty-number

Last synced: 11 months ago
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Format number to more humane form than toFixed

• Host: GitHub
• URL: https://github.com/dy/pretty-number
• Owner: dy
• Created: 2016-10-31T22:11:54.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2016-11-01T04:51:07.000Z (over 9 years ago)
• Last Synced: 2025-02-12T18:59:39.886Z (over 1 year ago)
• Language: JavaScript
• Size: 10.7 KB
• Stars: 4
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: readme.md

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README

          
#pretty-number [![unstable](http://badges.github.io/stability-badges/dist/unstable.svg)](http://github.com/badges/stability-badges)

Format number so it gets more humane format.

## Usage

[![npm install pretty-number](https://nodei.co/npm/pretty-number.png?mini=true)](https://npmjs.org/package/pretty-number/)

```js

const pretty = require('pretty-number');

pretty(10e+20) //10²¹

pretty(12e+20) //1.2 × 10²¹

pretty(1) //1

pretty(0) //0

pretty(-1) //−1

pretty(1.555e+20) //1.555 × 10²⁰

pretty(1.555e-15) //1.555 × 10⁻¹⁵

pretty(Infinity) //∞

pretty(-Infinity) //−∞

pretty(7.2973525664e-3, 3) //7.297 352 5664 × 10⁻³

pretty(72973525.664) //72 973 525.664

pretty(.123) //0.123

pretty(-.123) //−0.123

pretty(1.5) //1.5

pretty(-1.5) //−1.5

pretty(1e100) //10¹⁰⁰

pretty(-1e100) //−10¹⁰⁰

pretty(1e-100) //10⁻¹⁰⁰

pretty(-1e-100) //−10⁻¹⁰⁰

//indicate wishful precision

pretty(-0.000000005) //0

pretty(-0.000000005, 12) //−0.000 000 005

```

Formatting can be modified via constants:

```js

pretty.multSign = '×';

pretty.minusSign = '−';

pretty.spaceSign = ' ';

pretty.fractSign = '.';

pretty.precision = 9;

```

Note also that to make result look good custom font may be needed.

## Related

* [human-format](https://github.com/JsCommunity/human-format) — handle SI prefixes, supposedly works well with pretty-number.

* [mumath](https://github.com/dfcreative/mumath) — set of practical math utils.