number-operator
Version:
Perform correct +-* / operation operations on the front end
59 lines (42 loc) • 968 B
Markdown
number-operator
Because JS uses the IEEE 754 double version (64-bit), and it has this problem as long as it uses the IEEE 754 language. So when we calculate the number operation, there will be a precision error
Installation
```bash
npm install -D number-operator
```
Usage
Normal environment computing
```
console.log(0.1+0.2);
0.30000000000000004 ❌
console.log(0.3-0.1);
0.19999999999999998 ❌
console.log(0.1*0.2);
0.020000000000000004 ❌
console.log(0.3/0.2);
1.4999999999999998 ❌
```
use number-operator
```
require('number-operator');
or
//import 'number-operator'
console.log((0.1)._plus_(0.2));
0.3 🙆
console.log((0.3)._minus_(0.1));
0.2 🙆
console.log((0.1)._times_(0.2));
0.02 🙆
console.log((0.3)._div_(0.2));
1.5 🙆
```
chained call
```
console.log((0.3)._minus_(0.1)._plus_(0.1));
0.3 🙆
```
String type can also be used
```
console.log(('0.3')._minus_(0.1)._plus_('0.1'));
0.3 🙆
```