---
tags: 公益程式體驗營 - 2022
---

# 🏅 5/12(四) 每日 JS 刷題任務 - 字串再複習
### 題目一：字串輸出

// input 輸入
callString("apple")
callString("banner")
callString("qqq")

// output 輸出
"a-p-p-l-e"
"b-a-n-a-n-a"
"q-q-q"

### 題目二：字串數量
* 若大於五個字元，請只顯示前兩個字

// input 輸入
checkFiveWord("hello")
checkFiveWord("hi~")
checkFiveWord("Jackson")

// output 輸出
"he"
"hi~"
"Ja"

### 題目三：函式強制正整數相乘

// input 輸入 
multiply(2,3)
multiply(1,3,5)
multiply(7,7,7,7,7)
multiply(5,3,-2)
multiply(4)
// output 輸出
6
15
16807
30
4

### 題目四：
之後老師將會出有關 **for 迴圈，與陣列操作(forEach、map、sort)的題目**，還請同學在此分享免費學習資源，文章與影片皆可

1. [MDN：Loops and iteration](https://developer.mozilla.org/zh-TW/docs/Web/JavaScript/Guide/Loops_and_iteration)
2. [學員 for 迴圈筆記](https://hackmd.io/@wywsmail/SJjkvWA2H)
3. [陣列 forEach](https://www.youtube.com/watch?v=_vFuDQ_6Xt8)
4. [for 迴圈介紹](https://youtu.be/sTkjk84SIP0)
5. [陣列 sort](https://youtu.be/3ohTzWhLua8)
6. [卡斯伯老師的陣列教學 (超推!!!)](https://www.casper.tw/javascript/2017/06/29/es6-native-array/#Array-prototype-every)

## 回報流程

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（也可以將答案直接貼至「回報區」）


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