如何在 Discord 用户输入中搜索值并将其分配给 var？答案

【问题标题】：How do I search a Discord user input for a value and assign it to a var?如何在 Discord 用户输入中搜索值并将其分配给 var？
【发布时间】：2021-03-25 03:17:25
【问题描述】：

我正在尝试在 Discord 用户输入中搜索附加到属性（攻击次数、攻击技能、强度、韧性、保存）的整数，然后通过一些计算运行这些参数。

目前该函数使用命令中args的顺序：

!赔率 5 3 4 5 3

这行得通，但我想要这样的东西：

!赔率: 5 sk: 3 st: 4 t: 5 sv: 3

机器人会在用户输入中以任意顺序搜索附加到这些属性的值，并使用这些整数进行计算。

此外，如果属性不存在，机器人将不会将它们包含在输出中（或分配默认值），并通过添加不附加整数的附加单短语属性（例如 fnp或 res) 然后它会添加另一个标准计算和输出。

这是我目前所拥有的：

const { Message } = require('discord.js')
module.exports = {
    name: 'odds',
    aliases: ['stats', 'probability'],
    usage: '[#attacks (1 = auto hit)] [skill] [strength] [toughness] [save (7 = no save)]',
    description: 'What are the odds?',

    execute(message, args) {
        let attack = args[0]
        let skill;
        if (args[1]>=7) skill = 7;
        else skill = args[1];
        let strength = args[2]
        let toughness = args[3]
        let save;
        if (args[4]<=6) save = args[4];
            else save = 7;
        let hits = parseFloat((attack*((7-skill)/6)).toFixed(2))
        let hitSixes = parseFloat((attack*(1/6)).toFixed(2))
        let woundFactor; 
         if (strength>=(2*toughness)) woundFactor = 2;
        else 
        if (strength>toughness) woundFactor = 3;
        else
        if (strength==toughness) woundFactor = 4;
        else
        if (toughness>=(2*strength)) woundFactor = 6;
        else
        if (strength<toughness) woundFactor = 5;

        let wounds = parseFloat((hits*((7-woundFactor)/6)).toFixed(2))
        let woundSixes = parseFloat((hits*(1/6)).toFixed(2))
        let unsavedWounds = parseFloat(((wounds-(wounds*((7-save)/6))).toFixed(2)))

    message.channel.send(`On average you will make:\n${hits} successful hits (with ${hitSixes} sixes)\n${wounds} successful wounds (with ${woundSixes} sixes)\nGiving a total of ${unsavedWounds} unsaved wounds.`)
    }}

非常感谢任何和所有帮助！

【问题讨论】：

标签： javascript arguments discord discord.js

【解决方案1】：

// what you accept:
const inputs = {
    at: 0,
    sk: 0,
    st: 0,
    t: 0,
    sv: 0,
}

for (let i = 0, arg; arg = args[i]; i++) {
    const index = arg.indexOf(':'); // it must have an ":" as last character
    if (index === -1) {
        continue;
    }
    const keyword = arg.substr(0, index - 1); // get the word
    if (!inputs.hasOwnProperty(keyword)) { // check if it's an element of inputs
        continue;
    }
    if (i + 1 === args.length) { // make sure enough args are available
        continue;
    }
    inputs[keyword] = isNaN(args[i + 1]) ? 0 : +args[i + 1]; // make sure it's a number
    i++; // skip the next element
}

let attack = inputs.at;
let skill = inputs.sk >= 7 ? 7 : inputs.sk;
let strength = inputs.st;
let toughness = inputs.t;
let save = inputs.sv <= 6 ? inputs.sv : 7;

【讨论】：