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js-red-package

用 js 实现一个类似微信红包的随机算法

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js-red-package 🧧

用 js 实现一个类似微信红包的随机算法

🚀 支持 JavaScript 浮点数运算

https://www.npmjs.com/package/js-red-package/

https://github.com/xgqfrms/js-red-package

install

$ yarn add js-red-package
# or
$ npm i js-red-package

usage

// ESM,build/index.min.mjs (default)
import {autoRandomRedPackage} from "js-red-package";

// OR
// CMJ, build/index.min.js
const autoRandomRedPackage = require("js-red-package");
// const autoRandomRedPackage = require("js-red-package/build/index.min.js");

test

const total = arr => arr.result.reduce((acc, i) => acc += i*100, 0) / 100;

// 测试 test cases
const test = autoRandomRedPackage(0.1, 11);// ❌ 异常处理
const test0 = autoRandomRedPackage(0.1, 5);
const test1 = autoRandomRedPackage(0.1, 10); // ✅ ok
const test2 = autoRandomRedPackage(1, 10);
const test3 = autoRandomRedPackage(10, 10);
const test4 = autoRandomRedPackage(100, 10);
const test5 = autoRandomRedPackage(100, 11);

log(`\ntest =`, test);
log(`total =`, test && total(test));

log(`\ntest =`, test0);
log(`total =`, test0 && total(test0));

log(`\ntest =`, test1);
log(`total =`, test1 && total(test1));

log(`\ntest =`, test2);
log(`total =`, test2 && total(test2));

log(`\ntest =`, test3);
log(`total =`, test3 && total(test3));

log(`\ntest =`, test4);
log(`total =`, test4 && total(test4));

log(`\ntest =`, test5);
log(`total =`, test5 && total(test5));


/*

$ node test.js

(node:2259) ExperimentalWarning: The ESM module loader is experimental.
💩 请重新输入红包数量! 减少红包数量,或增加红包金额!
❌ 你输入的红包数量太多了,每个人至少要能分到 0.01 元!

test = false
total = false

test = {
  total: 0.1,
  result: [ 0.02, 0.01, 0.02, 0.03, 0.02 ],
  desc: '\n' +
    '        🕵️‍♂️ 你输入的红包总额是 0.1 元, 红包数量是 5 个!\n' +
    '        👍 最大的红包是 0.03 元!\n' +
    '        👎 最小的红包是 0.01 元!\n' +
    '      '
}
total = 0.1

test = {
  total: 0.1,
  result: [
    0.01, 0.01, 0.01,
    0.01, 0.01, 0.01,
    0.01, 0.01, 0.01,
    0.01
  ],
  desc: '\n' +
    '        🕵️‍♂️ 你输入的红包总额是 0.1 元, 红包数量是 10 个!\n' +
    '        👍 最大的红包是 0.01 元!\n' +
    '        👎 最小的红包是 0.01 元!\n' +
    '      '
}
total = 0.1

test = {
  total: 1,
  result: [
    0.18, 0.08, 0.09,
    0.12, 0.01, 0.18,
    0.07, 0.08, 0.14,
    0.05
  ],
  desc: '\n' +
    '        🕵️‍♂️ 你输入的红包总额是 1 元, 红包数量是 10 个!\n' +
    '        👍 最大的红包是 0.18 元!\n' +
    '        👎 最小的红包是 0.01 元!\n' +
    '      '
}
total = 1

test = {
  total: 10,
  result: [
    0.76, 0.39, 1.88,
    0.71, 0.33, 1.57,
    0.55, 1.23, 1.72,
    0.86
  ],
  desc: '\n' +
    '        🕵️‍♂️ 你输入的红包总额是 10 元, 红包数量是 10 个!\n' +
    '        👍 最大的红包是 1.88 元!\n' +
    '        👎 最小的红包是 0.33 元!\n' +
    '      '
}
total = 10

test = {
  total: 100,
  result: [
    11.34,  13.3,  9.6,
     3.29, 10.27, 12.1,
    12.31,  5.17, 6.29,
    16.33
  ],
  desc: '\n' +
    '        🕵️‍♂️ 你输入的红包总额是 100 元, 红包数量是 10 个!\n' +
    '        👍 最大的红包是 16.33 元!\n' +
    '        👎 最小的红包是 3.29 元!\n' +
    '      '
}
total = 100

test = {
  total: 100,
  result: [
    10.43, 15.55,     9,
     4.64,  7.74, 11.96,
     12.9,  4.82, 14.19,
     8.36,  0.41
  ],
  desc: '\n' +
    '        🕵️‍♂️ 你输入的红包总额是 100 元, 红包数量是 11 个!\n' +
    '        👍 最大的红包是 15.55 元!\n' +
    '        👎 最小的红包是 0.41 元!\n' +
    '      '
}

*/


Keywords

js

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Package last updated on 21 Sep 2020

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