---
tags: 公益程式體驗營 - 2022
---
# 🏅 5/5(四) 每日 JS 刷題任務 - 字串設計
## 提示
1. [JavaScript 字符串方法](https://www.w3school.com.cn/js/js_string_methods.asp)
### 題目一：字串長度計算
``` =JavaScrip
// input 輸入
checkStringLength("Hello")
checkStringLength("my name is Tom！")
// output 輸出
5
15
```
### 題目二：英文強制小寫
``` =JavaScript
// input 輸入
lowerCase("FOKFF@gmail.com")
lowerCase("gonSakpm@gmail.com")
// output 輸出
"fokff@gmail.com"
"gonsakpm@gmail.com"
```
### 題目三：去除掉段落的左右空白
``` =JavaScript
// input 輸入
trimString(" hi, mom! ")
trimString(" aa@gmail.com ")
// output 輸出
"hi, mom!"
"aa@gmail.com"
```
### 題目四：字串依照條件轉陣列
``` =JavaScript
// input 輸入
splitString("black,red,white")
splitString("coffee,tea")
// output 輸出
// ["black","red","white"]
// ["coffee","tea"]
```
### 題目五：切割市區字串
``` =JavaScript
// input 輸入
getArea("高雄市前鎮區一心二路33號");
getArea("高雄市新興區新興路66號");
// output 輸出
"前鎮區"
"新興區"
```
## 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： -->
回報區
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<!-- 17. Murmurline#6969
答案：
// length
// toLowerCase()
// trim()
// split()
// substr(x, x)
Codepen：https://codepen.io/murmurline/pen/vYdOQym -->
<!-- 18. pipi
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CodePen:
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https://codepen.io/skvera/pen/zYRGyyp?editors=0011
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https://codepen.io/yuyu0905/pen/XWZboQV
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https://codepen.io/ryanlu1125/pen/JjpYdQP?editors=0012
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<!-- 58. Jia-Hong Chen#3863
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<!-- 86. 靜宜#6866
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<!-- 125. WangShuan(雅萱)#0947
const checkStringLength = function (str) {
return str.length;
}
const lowerCase = function (str) {
return str.toLowerCase()
}
const trimString = function (str) {
return str.trim()
}
const splitString = function (str) {
return str.split(',')
}
const getArea = function (str) {
return str.substr(3, 3)
}
-->
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codepen：https://codepen.io/yichunlin09/pen/bGvrgJG?editors=0011-->
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