前端vue项目如何使用Decimal.js做加减乘除求余运算

npm install decimal.js

const Decimal = require('decimal.js')
const num1 = Decimal("5");
const num2 = Decimal("3");
const remainder = num1.add(num2);

const Decimal = require('decimal.js')
const num1 = Decimal("5");
const num2 = Decimal("3");
const remainder = num1.sub(num2);

const Decimal = require('decimal.js')
const num1 = Decimal("5");
const num2 = Decimal("3");
const remainder = num1.mul(num2);

const Decimal = require('decimal.js')
const num1 = Decimal("5");
const num2 = Decimal("3");
const remainder = num1.div(num2);

const Decimal = require('decimal.js')
const num1 = Decimal("5");
const num2 = Decimal("3");
const remainder = num1.modulo(num2);

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()
}
// 减
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()
}
// 除
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()
}
//乘
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>