vue中高精度小数问题(加减乘除方法封装)处理

npm install bignumber.js --S

import { BigNumber } from 'bignumber.js';

add(a, b) {
  a = BigNumber(a);
  b = BigNumber(b);
  return a.plus(b).toNumber();   //结果需要用toNumber转为普通数字
}
//调用
add(0.1,0.2)    //0.3

minus(a, b) {
  a = BigNumber(a);
  b = BigNumber(b);
  return a.minus(b).toNumber();
},

minus(0.3,0.1);     //0.2

mutiply(a, b) {
  a = BigNumber(a);
  b = BigNumber(b);
  return a.multipliedBy(b).toNumber();
}

mutiply(3,0.6);   //1.8

devide(a, b) {
  a = BigNumber(a);
  b = BigNumber(b);
  return a.dividedBy(b).toNumber();
}
devide(355,113)  //  3.1415929203539825

multiAdd(...params) {
  let data = BigNumber(0);
  for (let index = 0; index < params.length; index++) {
    const element = BigNumber(params[index]);
    data = data.plus(element);
  }
  return data.toNumber();
}

multiAdd(1,2,3,4,5);   //15