---
tags: 30 天軟體工程師體驗營｜2025
---
> 建議觀看的影音章節：
> JS - 流程判斷 - if、else if、else
> JS - if 流程圖規劃流程
> JS - if 中階運用

# 🏅 JS 任務 Day7 - if 流程判斷 III

### 題目一：有沒有打折
某廠商大拍賣，折扣表如下：

* 未滿 2000 無折扣
* 2000~2999 9折
* 3000~3999 8折
* 高於 4000 7折

// input 輸入
sale(5000)
sale(2500)
sale(3300)
sale(200)
// output 輸出
3500
2250
2640
200

### 題目二：水果顏色查詢機
**輸入一個水果名稱，它就回傳對應的顏色
若不是已知的水果，就回覆「查無此水果」**

**參考對照表**
* 香蕉: "黃色",
* 蘋果: "紅色",
* 葡萄: "紫色",
* 奇異果: "綠色",
* 橘子: "橘色",
* 藍莓: "藍色",

// input 輸入
fruitColor("香蕉")
fruitColor("奇異果")
fruitColor("小當家")

// output 輸出
"黃色"
"綠色"
"查無此水果"

### 題目三：年薪計算機
以下是梅添良軟體公司的計薪方式
* 每個月固定支薪，不幫員工保勞健保
* 三節沒禮金，也沒任何獎金
* 只有月薪、年終
#### 年終計算
* 未滿一年，不會有年終
* 待超過一年的員工，年終會有 1 個月
* 待超過五年的員工，年終會有 1.3 個月

// input 輸入 
// annualSalary(月薪,年資)
annualSalary(10000,0.8)
annualSalary(12000,1.5)
annualSalary(20000,10)
// output 輸出
"120000"
"156000"
"266000"

## 魔王題，請不要輕易接觸，會花上 8hr 時間
### 梅添良薪水數字大小寫轉換
* 老闆開發票時，很不擅長數字小寫轉大寫，請幫助他這個金魚腦

// input 輸入
changeCapital(35000)
changeCapital(9876543210)
changeCapital(-33)
changeCapital("安安")
changeCapital("033")
// output 輸出
"參萬伍仟元整"
"玖拾捌億柒仟陸佰伍拾肆萬參仟貳佰壹拾元整"
"格式錯誤"
"格式錯誤"
"參拾參元整"

:::spoiler 提示
http://tax.0123456789.tw/
:::

## 回報流程

1. 將答案貼在 Codepen 並複製 Codepen 連結貼至「回報區」回報
（也可以將答案直接貼至「回報區」）


| 報數 | Discord 名字 | Codepen／其他回饋 |
|:----:|:------------:|:--------------------------------------------------------------------------------:|
| 1 | 4chan | [Codepen](https://codepen.io/ijuolaqc-the-looper/pen/wBBjZwz?editors=1011) |
|2|7lun|[Day7-Codepen](https://codepen.io/mfyvqhsn-the-bold/pen/MYYGZQP) 魔王關待補|
|3|dean|[Codepen](https://codepen.io/ch933114/pen/wBBjZjr?editors=0011)|
|4|小趴|[Codepen](https://codepen.io/papa2415/pen/XWQvzXQ)|
|5|B|[Codepen](https://codepen.io/Babel777/pen/YPPLMBG)|
| 6 | Joseph_Kyuu | [Codepen](https://codepen.io/zrzfastd-the-reactor/pen/azzGrzO) |
|7|pastor|[Codepen](https://codepen.io/peter_hung/pen/QwwrRGz)|
| 8 | Archang | [CodePen](https://codepen.io/pxfnrvgk-the-styleful/pen/zxxjQNG)|
| 9 | RUDY | [CodePen](https://codepen.io/Rudy-crw/pen/pvvVMgd?editors=0010)待打魔王|
| 10 | 叮咚 | [CodePen](https://codepen.io/pinchieh-lin/pen/EaaLqEJ)|
| 11 | ying | [CodePen](https://codepen.io/Lara-Lin/pen/gbbzymw)|
| 12 | Michael-鴿子 | [CodePen](https://codepen.io/KeinSacer_Michael/pen/emmrqbX)|
| 13 | QoQ | [CodePen](https://codepen.io/xxmevbri-the-reactor/pen/raavXXE)魔王待補|
| 14 | 馬德 | [CodePen](https://codepen.io/maywang/pen/LEEmwbK?editors=0012)魔王待補|
| 15 | 力文 | [CodePen](https://codepen.io/liwenchiou/pen/zxxaGBx?editors=0011)|
| 16 |林明德| [CodePen](https://codepen.io/lwescocn-the-vuer/pen/GggGpme?editors=1111)
| 17 |周周| [CodePen 魔王待補](https://codepen.io/jhoujhou-the-decoder/pen/bNNKdjz?editors=0012)
| 18 | CBK | [CodePen](https://codepen.io/BK-C-the-styleful/pen/oggyxpW)
| 19 | Hugh | [CodePen](https://codepen.io/Hugh-Chen/pen/ByyVzra?editors=0011)
| 20 | William Hsieh | [CodePen](https://codepen.io/lsaimqxa-the-vuer/pen/myyKrJy?editors=0012)|
| 21 | 牛奶 | [CodePen](https://codepen.io/0omilko0/pen/ByyVKqG?editors=0011)|
| 22 | Kath | [CodePen](https://codepen.io/JLin-the-lessful/pen/bNNKwBq) 魔王待補|
| 23 | SeanLuTW | [CodePen](https://codepen.io/sean85914/pen/raaKLbJ) |
| 24 | ArvinSu | [CodePen](https://codepen.io/Arvin-Su/pen/ZYYRBeg) |
| 25 | yang |[codepen](https://codepen.io/Yang-J/pen/MYYXJee?editors=0012)|
| 26 | ann.328 |[codepen](https://codepen.io/Yang-J/pen/MYYXJee?editors=0012)|
| 27 | Anna | [Codepen](https://codepen.io/Anna-Teng/pen/dPPeEzR?editors=1011)|
| 28 | mambo | [Codepen](https://codepen.io/chiang_mb/pen/PwwaxmL)|
| 29 | WEIWEI | [Codepen](https://codepen.io/weiwei93/pen/ByyVOvZ)魔王待補 |
| 30 | mercury2508. | [Codepen](https://codepen.io/Mercury2508/pen/XJJYGPa) |
| 31 | nora_zi | [Codepen](https://codepen.io/Nora-Ch/pen/EaaRqRG) 魔王待補 |
| 32 | BL | [Codepen](https://codepen.io/bonnieli1414/pen/JooZQKy?editors=0012) |
| 33 | Leonard | [Codepen](https://codepen.io/hyyfjqra-the-sans/pen/yyyqJEJ) |
| 34 | 蛋白 | [蛋白的JS Codepen Day7](https://codepen.io/sjlu-0/pen/vEEagMb) 魔王待補|
| 35 | jingle0900 | [Codepen](https://codepen.io/EvaLi0472/pen/XJJYyBa)
| 36 | Apple Pie | [Codepen](https://codepen.io/ymevqzjf-the-builder/pen/gbbKxEm?editors=0011) 魔王待補 |
| 37 | stone | [Codepen](https://codepen.io/bgrwlzoz-the-reactor/pen/xbbJqjM)|
| 38 | wei_0982 | [Codepen](https://codepen.io/nico-lai/pen/oggyXvx)|
| 39 | Chuang| [Codepen](https://codepen.io/uidoytjq-the-solid/pen/GggXBwX?editors=0010) 魔王待補 |
| 40 | tung| [Codepen](https://codepen.io/oltsegon-the-looper/pen/oggajKp) 魔王待補 |
|41|蛋殼|[Codepen](https://codepen.io/weybrian/pen/PwwyZeY)
| 42 | Jessie | [Jessie 的 Codepen](https://codepen.io/bakyfkso-the-looper/pen/zxxmvXo?editors=1010) / 魔王V1(還有bug待修)
| 43 | oyll| [Codepen](https://codepen.io/dizzydog-rgb/pen/raaqJgR?editors=0011) |
| 44 | Owen He | [Codepen](https://codepen.io/owen1120/pen/ZYYMjYd?editors=0012) |
| 45 | Ariel| [Codepen](https://codepen.io/ariel0510/pen/JoomwMp?editors=0011) 魔王待補 |
| 46 | Sonia| [Codepen](https://codepen.io/YUJOU/pen/PwwxbEN?editors=0012) |
| 47 | 姜承| [Codepen](https://codepen.io/Troy0718/pen/XWxVvbL?editors=0012) |
| 48 | Rogan | [Codepen](https://codepen.io/RoganHsu/pen/ByyvboQ?editors=1111) |
|49|JHT|[Codepen](https://codepen.io/juanht/pen/XJJOKEO?editors=0012)|
| 50 | Toung | [Codepen](https://codepen.io/Toung/pen/GggzezN) 魔王待補
| 51 | vima |[Codepen](https://codepen.io/chin7004/pen/LEEvRdp?editors=0011)|
| 52 | ja4071 |[Codepen](https://codepen.io/SHAO-L/pen/NPPmaBV?editors=1112)|
| 53 | kelsonhouse |[Codepen](https://codepen.io/Kelson-House/pen/wBBZXBX?editors=0011)|
| 54 | allen3290 |[Codepen](https://codepen.io/udadkudw-the-looper/pen/LEEvKKa?editors=1111)|
| 55 | duchi |[Codepen](https://codepen.io/sqaz0502/pen/GggaJeX)|
| 56 | ninii |[Codepen](https://codepen.io/niiniiii/pen/yyyqZZr)|
| 57 | Yi-Kuei |[Codepen](https://codepen.io/Yi-Kuei-Chuang/pen/OPVJMLB?editors=0011)|
| 58 | taishan_90178 |[Codepen](https://codepen.io/candy99/pen/raVNJMp?editors=0012)|
| 59 | xiaocai_97765 | [Codepen](https://codepen.io/dupre55667788/pen/PwqogEX?editors=0010)
| 60 | 610 | [Codepen](https://codepen.io/YI-LING-LIU/pen/yyNOyYp)|
| 61 | rinn | [Codepen](https://codepen.io/cqsioetr-the-bold/pen/VYLGrmq)|
| 62 | World | [Codepen](https://codepen.io/HexschoolVuePujols/pen/myJGwPg)|
| 63 | kent_31665 | [Codepen](https://codepen.io/kentlee406/pen/ByNGNRr?editors=0011)|
| 64 | haohaoliao | [Codepen](https://codepen.io/yuyuyuhaohao/pen/gbPaKxX?editors=0012)
<!-- 解答：
題目一：
function sale(price) {
if (price >= 4000) return price * 0.7;
if (price >= 3000) return price * 0.8;
if (price >= 2000) return price * 0.9;
return price;
}

題目二：
function fruitColor(fruit) {
const map = {
"香蕉": "黃色",
"蘋果": "紅色",
"葡萄": "紫色",
"奇異果": "綠色",
"橘子": "橘色",
"藍莓": "藍色",
};

return map[fruit] || "查無此水果";
}

題目三：
function annualSalary(monthly, years) {
let bonus = 0;

if (years >= 5) {
bonus = monthly * 1.3;
} else if (years >= 1) {
bonus = monthly;
}

return (monthly * 12 + bonus).toString();
}

進階題：
function changeCapital(num) {
if (typeof num === "string") {
if (!/^\d+$/.test(num)) return "格式錯誤";
num = Number(num);
}

if (typeof num !== "number" || num < 0) return "格式錯誤";

const units = ["", "拾", "佰", "仟"];
const sections = ["", "萬", "億", "兆"];
const digits = ["零", "壹", "貳", "參", "肆", "伍", "陸", "柒", "捌", "玖"];

if (num === 0) return "零元整";

let result = "";
let sectionCount = 0;

while (num > 0) {
let section = num % 10000;
if (section !== 0) {
let str = "";
let unitPos = 0;
let zero = true;
while (section > 0) {
const digit = section % 10;
if (digit === 0) {
if (!zero) {
zero = true;
str = digits[0] + str;
}
} else {
zero = false;
str = digits[digit] + units[unitPos] + str;
}
unitPos++;
section = Math.floor(section / 10);
}
result = str + sections[sectionCount] + result;
} else if (!result.startsWith("零")) {
result = digits[0] + result;
}
sectionCount++;
num = Math.floor(num / 10000);
}

return result.replace(/零+/g, "零").replace(/零$/, "") + "元整";
}

回報區
---

| 報數 | Discord 名字 | Codepen／其他回饋 | |
|:----:|:------------:|:--------------------------------------------------------------------------------:| :--------------: |
| 1 | 4chan | [Codepen](https://codepen.io/ijuolaqc-the-looper/pen/wBBjZwz?editors=1011) |

<!--【快速複製】
| num | user | [Codepen]() |
-- >