---
tags: 30 天軟體工程師體驗營｜2025
---

# 🏅 JS 任務 Day11 - 混合題
> 建議觀看的影音章節：
> JS - 陣列教學
> JS - 物件教學

### 題目一：星星顯示

// input 輸入
createStar(1)
createStar(3)
createStar(5)
// output 輸出
"*"
"***"
"*****"

### 題目二：反轉陣列

// input 輸入
reverseAry([7,8,9])
reverseAry(["black","white","red"])
reverseAry([{name:"mike"},{name:"John"}])
// output 輸出
[9,8,7]
["red","white","black"]
[{name:"John"},{name:"mike"}]

### 題目三：陣列轉字串

// input 輸入
aryToString([7,8,9])
aryToString(["black","white","red"])
aryToString([true,false,true])
// output 輸出
"9,8,7"
"red,white,black"
"true,false,true"

### 題目四：進階題，不適合新手：雙 for 迴圈

// input 輸入
multiplication(3)
multiplication(5)
// output 輸出 為字串格式
//  multiplication(3)
2x1=2
2x2=4
3x1=3
3x2=6
3x3=9

//  multiplication(5)
2x1=2
2x2=4
3x1=3
3x2=6
3x3=9
4x1=4
4x2=8
4x3=12
4x4=16
5x1=5
5x2=10
5x3=15
5x4=20
5x5=25

## 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」）


<!-- 解答
題目一：
function createStar(n) {
console.log('*'.repeat(n));
}

題目二：
function reverseAry(arr) {
console.log([...arr].reverse());
}

題目三：
function aryToString(arr) {
console.log(arr.slice().reverse().join(','));
}

題目四：
function multiplication(n) {
let result = '';
for (let i = 2; i <= n; i++) {
for (let j = 1; j <= i; j++) {
result += `${i}x${j}=${i * j}\n`;
}
}
console.log(result);
}

-->

回報區
---

| 報數 | Discord 名字 | Codepen／其他回饋 |
|:----:|:-------------------:|:---------------------------------------------------------------------------------------------------------------------------------:|
| 1 | 4chan | [Codepen](https://codepen.io/ijuolaqc-the-looper/pen/NPPEarr) |
|2|小趴|[Codepen](https://codepen.io/papa2415/pen/ZENYRbG)|
| 3 | dean |[Codepen](https://codepen.io/ch933114/pen/WbbYZKO?editors=0011)|
| 4 | han | [Codepen](https://codepen.io/iamHanCheng/pen/EaaOwwe?editors=0011)
| 5 | 7Lun| [Day11-Codepen](http://codepen.io/mfyvqhsn-the-bold/pen/gbbQGdr) |
| 6 | jingle0900| [Codepen](https://codepen.io/EvaLi0472/pen/wBBQPmj) |
| 7 | ying | [Codepen](https://codepen.io/Lara-Lin/pen/emmQyxv?editors=1111) |
| 8 | Pastor | [Codepen](https://codepen.io/peter_hung/pen/myyQLbX) |
| 9 |Saika|[Codepen](https://codepen.io/saika4501/pen/MYYzBoZ?editors=1111)|
| 10 |登登登|[Codepen](https://codepen.io/Duncanin/pen/GggwOEE)|
| 11 | SeanLuTW | [Codepen](https://codepen.io/sean85914/pen/WbbYgmv) |
| 12 | WAWATA| [Codepen](https://codepen.io/wa-wa-GNOHC-WA-Wa/pen/bNNQOKP) |
| 13 | Ariel | [Codepen](https://codepen.io/ariel0510/pen/VYYVGxx?editors=0011) |
| 14 | 馬德 | [Codepen](https://codepen.io/maywang/pen/qEEQYOr?editors=0012) |
| 15 | RUDY | [Codepen](https://codepen.io/Rudy-crw/pen/vEEQwgM?editors=0010) |
| 16 | WEIWEI | [Codepen](https://codepen.io/weiwei93/pen/MYYzEOr) |
| 17 | 力文 | [Codepen](https://codepen.io/liwenchiou/pen/EaaGYee?editors=1111) |
|18|蛋殼|[Codepen](https://codepen.io/weybrian/pen/myyadpW)
| 19 | 林明德 | [Codepen](https://codepen.io/lwescocn-the-vuer/pen/ByyvypG?editors=1111) |
| 20 | mercury2508. | [Codepen](https://codepen.io/Mercury2508/pen/raaoVMG) |
| 21 | oyll | [Codepen](https://codepen.io/dizzydog-rgb/pen/ByyvKoB?editors=0011) |
| 22 | Jessie_Yu | [Jessie_Yu 的 Codepen](https://codepen.io/bakyfkso-the-looper/pen/oggJxqm)
| 23 | nora_zizi | [Codepen](https://codepen.io/Nora-Ch/pen/vEEvKXL?editors=1111) |
| 24 | 牛奶 | [Codepen](https://codepen.io/0omilko0/pen/YPPdWdN?editors=0011) |
| 25 | Hugh | [Codepen](https://codepen.io/Hugh-Chen/pen/PwwXGQx?editors=1111) |
| 26 | CBK | [Codepen](https://codepen.io/BK-C-the-styleful/pen/myyaOVo) |
| 27 | yang |[codepen](https://codepen.io/Yang-J/pen/EaaGyqj?editors=0012)|
| 28 | Sonia |[codepen](https://codepen.io/YUJOU/pen/ByyvRdN?editors=0011)|
| 29 | William Hsieh | [Codepen](https://codepen.io/lsaimqxa-the-vuer/pen/zxxydyZ?editors=0012) |
| 30 | 叮咚 | [Codepen](https://codepen.io/pinchieh-lin/pen/xbbmpbZ) |
| 31 | B | [Codepen](https://codepen.io/Babel777/pen/LEEMOaN) |
| 32 | Chuang | [Codepen](https://codepen.io/uidoytjq-the-solid/pen/gbbZVqB?editors=0012) |
| 33 | Leonard | [Codepen](https://codepen.io/hyyfjqra-the-sans/pen/NPPoWwa) |
| 34 | 姜承 | [Codepen](https://codepen.io/Troy0718/pen/bGmMOBg?editors=0012) |
| 35 | ann.328 | [Codepen](https://codepen.io/yqmegupa-the-styleful/pen/JoowoYb) |
|36|JHT|[Codepen](https://codepen.io/juanht/pen/RNNvRyR?editors=0012)|
|37|wei_0982 |[Codepen](https://codepen.io/nico-lai/pen/LEEXKob)|
|38|tung |[Codepen](https://codepen.io/oltsegon-the-looper/pen/zxxeMQX)|
| 39 | Anna |[Codepen](https://codepen.io/Anna-Teng/pen/oggRgNO)|
| 40 | BL |[Codepen](https://codepen.io/bonnieli1414/pen/pvvmEKK?editors=0012)|
| 41 | kelsonhouse | [Codepen](https://codepen.io/Kelson-House/pen/gbbJWqd?editors=0011)|
| 42 | ArvinSu | [Codepen](https://codepen.io/Arvin-Su/pen/YPPbrVV)|
| 43 | ja4071 | [Codepen](https://codepen.io/SHAO-L/pen/GggVJoj?editors=0112)|
| 44 | allen3290 | [Codepen](https://codepen.io/udadkudw-the-looper/pen/KwwOBBP?editors=1111)|
| 45 | vima | [Codepen](https://codepen.io/chin7004/pen/oggKMBW?editors=0011) |
| 46 | Yi-Kuei| [Codepen](https://codepen.io/Yi-Kuei-Chuang/pen/dPooZVb?editors=1111) |
| 47 | xiaocai_97765 | [Codepen](https://codepen.io/dupre55667788/pen/MYwyjVq?editors=0010)
| 48 | ninii | [Codepen](https://codepen.io/niiniiii/pen/qEdNomP?editors=1111)
| 49 | taishan_90178| [Codepen](https://codepen.io/candy99/pen/QwbqWXv?editors=0012)
<!--【快速複製】
| num | user | [Codepen]() |
-- >