material_applet/common/computed.js

import Vue from 'vue';
import Decimal from 'decimal.js';
const toNumber = (num) => {
  return new Decimal(num).toNumber();
};
const plus = (n1 = 0, n2 = 0) => {
  const number1 = new Decimal(n1);
  const number2 = new Decimal(n2);
  let result = number1.add(number2);
  result = result.toFixed(2, Decimal.ROUND_DOWN);
  return toNumber(result);
};
const minus = (n1 = 0, n2 = 0) => {
  const number1 = new Decimal(n1);
  const number2 = new Decimal(n2);
  let result = number1.minus(number2);
  result = result.toFixed(2, Decimal.ROUND_DOWN);
  return toNumber(result);
};
const multiply = (n1 = 0, n2 = 0) => {
  const number1 = new Decimal(n1);
  const number2 = new Decimal(n2);
  let result = number1.mul(number2);
  result = result.toFixed(2, Decimal.ROUND_DOWN);
  return toNumber(result);
};
const divide = (n1 = 0, n2 = 0) => {
  const number1 = new Decimal(n1);
  const number2 = new Decimal(n2);
  let result = number1.div(number2);
  result = result.toFixed(2, Decimal.ROUND_DOWN);
  return toNumber(result);
};

Vue.prototype.$plus = plus;
Vue.prototype.$minus = minus;
Vue.prototype.$multiply = multiply;
Vue.prototype.$divide = divide;