# Accurate · [](https://www.npmjs.com/package/accurate) [](https://www.npmjs.com/package/accurate) [](https://travis-ci.org/Ipxxiao/accurate) [](https://coveralls.io/github/Ipxxiao/accurate?branch=master) [](https://github.com/prettier/prettier)
- Accurate is an precision calculation for JavaScript and Nodejs. supports numbers, decimals, strings, arrays, multidimensional array and expression.
- 解决 JavaScript 与 Node.js 精度计算（浮点数计算精度）问题。支持数字、小数、字符串、数组、多维数组和表达式。
## Browsers support
| [
](http://godban.github.io/browsers-support-badges/)
IE / Edge | [
](http://godban.github.io/browsers-support-badges/)
Firefox | [
](http://godban.github.io/browsers-support-badges/)
Chrome | [
](http://godban.github.io/browsers-support-badges/)
Safari | [
](http://godban.github.io/browsers-support-badges/)
iOS Safari | [
](http://godban.github.io/browsers-support-badges/)
Opera |
| --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| IE8+ Edge+ | last 10 versions | last 10 versions | last 2 versions | last 2 versions | last 2 versions |
## Install
``` base
npm i accurate -S
or
yarn add accurate
```
## Features
- Supports numbers, decimals, strings, arrays and multidimensional array.
- Contains arithmetic expression parser.
- Runs on any JavaScript engine.
- Is easily extensible.
- Open source.
- 支持数字、小数、字符串、数组和多维数组。
- 包含算术表达式解析器。
- 运行在任何 JavaScript 引擎。
- 易于扩展。
- 开源的。
## Usage
``` javascript
import accurate, {
add, addition, subtract, subtraction, multiply, mul, multiplication, division, divide, modulo, modulus, expr
} from 'accurate'
or
const accurate, {
add, addition, subtract, subtraction, multiply, mul, multiplication, division, divide, modulo, modulus, expr
} = require('accurate')
```
. **add（加法）**
``` javascript
>
1.1 + 0.3 + 0.1
accurate.add(1.1, 0.3, 0.1)
addition(1.1, 0.3, 0.1)
<-
1.5000000000000002
1.5
1.5
```
. **subtract（减法）**
``` javascript
>
1.1 - 0.2 - 0.1
accurate.subtract([1.1, 0.2, 0.1])
subtraction([1.1, 0.2, 0.1])
<-
0.8000000000000002
0.8
0.8
```
. **multiply（乘法）**
``` javascript
>
1.1 * 0.1 * 0.2
accurate.multiply([1.1, [0.1, 0.2]])
accurate.mul([1.1, [0.1, 0.2]])
multiplication([1.1, [0.1, 0.2]])
<-
0.022000000000000006
0.022
0.022
0.022
```
. **division（除法）**
``` javascript
>
1.1 / 10 / 2
accurate.division([1.1, 10], 2)
accurate.divide([1.1, 10], 2)
<-
0.05500000000000001
0.055
0.055
```
. **modulo（取模）**
``` javascript
>
1.1 % 1
accurate.modulo(1.1, 1)
accurate.modulus(1.1, 1)
<-
0.10000000000000009
0.1
0.1
```
. **expr（表达式）**
``` javascript
const a = 0.3
const b = 0.1
>
0.3 - 0.1
accurate.expr(`${a}-${b}`)
<-
0.19999999999999998
0.2
```
``` javascript
>
((1.1+0.3)*4+2*3)/(1.1%0.3-1*0.1)-1*5
accurate.expr('((1.1+0.3)*4+2*3)/(1.1%0.3-1*0.1)-1*5')
accurate.expr('((1.1 + 0.3) * 4 + 2 * 3) / (1.1 % 0.3 - 1 * 0.1) - 1 * 5')
<-
110.99999999999987
111
111
```
## More
- [MIT License](https://github.com/Ipxxiao/accurate/blob/master/LICENSE)
- [Changelog](https://github.com/Ipxxiao/accurate/blob/master/CHANGELOG.md)
- [Test Case](https://github.com/Ipxxiao/accurate/blob/master/__tests__/index.spec.ts)
- [Docs](https://github.com/Ipxxiao/accurate/tree/master/docs)