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vertical-calculator-mp

v0.1.2

Published

[![Build Status](https://travis-ci.com/meixg/vertical-calculator-mp.svg?branch=master)](https://travis-ci.com/meixg/vertical-calculator-mp)

Downloads

2

Readme

竖式计算器

Build Status

竖式计算器,可产出适用于小程序 rich-text 组件的 node 树。

quick start

const cal = new VerticalCalculator({
    tdClass: '',
    trClass: ''
});
const res = cal.generate(266, OPERATOR.div, 25);

// res = {
//     code: 0, // 状态码
//     result: [], // 产生的 node 树
//     text: '' // 如果有异常,信息显示在这里
// }

API

.generate(numberA, operator, numberB)

  • Arguments

    • {number} numberA
    • {string} operator
    • {number} numberB
  • Return

    {
        code: 0, // 状态码
        result: [], // 产生的 node 树
        text: '' // 如果有异常,信息显示在这里
    }
  • Usage

    产生 node 树。operator 支持以下四种:

    • +
    • -
    • *
    • \

.checkInput(numberA, operator, numberB)

  • Arguments

    • {number} numberA
    • {string} operator
    • {number} numberB
  • Return

    {
        code: 0, // 状态码
        result: [], // 产生的 node 树
        text: '' // 如果有异常,信息显示在这里
    }
  • Usage

    在转换前对输入进行检查,code === 0 时,表示可以生成对应的 node 树。一般用于对不支持的输入进行过滤。

状态码

返回结果中 code 为状态码,为一下几种:

  • 0:成功
  • 1:输入必须为数字
  • 2:输入值不能为小数
  • 3:不支持的运算符
  • 4:除法时,被除数不能小于除数
  • 5:除法时,被除数不能为0
  • 6:减法时,numa 不能比 numb 小
  • 7:输入不能为小数