- 安装依赖 decimal.js
- npm install --save decimal.js
- 封装
import { Decimal } from 'decimal.js'
export function add (x, y) {
if (!x) {
x = 0
}
if (!y) {
y = 0
}
const xx = new Decimal(x)
const yy = new Decimal(y)
return xx.plus(yy).toNumber()
}
export function sub (x, y) {
if (!x) {
x = 0
}
if (!y) {
y = 0
}
const xx = new Decimal(x)
const yy = new Decimal(y)
return xx.sub(yy).toNumber()
}
export function div (x, y) {
if (!x) {
x = 0
}
if (!y) {
return 0
}
const xx = new Decimal(x)
const yy = new Decimal(y)
return xx.div(yy).toNumber()
}
export function mul (x, y) {
if (!x) {
x = 0
}
if (!y) {
y = 0
}
const xx = new Decimal(x)
const yy = new Decimal(y)
return xx.mul(yy).toNumber()
}
<script>
import {add} from "@/utils/decimal"
export default {
methods:{
handlePlus() {
add(10.5,4.877)
}
}
}
</script>