---
tags: JS 直播班 - 2022 秋季班
---
# 🏅 Day 20 - 函式與陣列物件整合運用
綜合前幾天函式觀念以及陣列物件相關操作，回答下方問題。
問題
---
依照註解敘述，完成下方程式碼（只需要補上 `...` 的部分，其餘不要更動）
```javascript=
let courses = [
{
title: 'Javascript',
members: 400,
id: 1,
isStarted: true,
isSoldout: true,
tasks: ['主線任務', '每日任務']
}
];
let newCourse = {
title: 'Vue3',
members: 300,
id: 2,
isStarted: false,
isSoldout: true,
tasks: ['主線任務', '每日任務']
};
// 1. 請將 courses 陣列中 id 為 1 的物件，tasks 陣列新增一筆資料為 '每日刷題'。
// 2. 請完成下方函式，將物件做為參數，判斷當課程中的 isSoldout 屬性為 true 時，
// 就將此物件新增到 courses 陣列中，並回傳 courses 陣列的長度
// （只需要補上 ... 的部分，其餘不要更動）
function addCourse(courseObj) {
if(...) {
courses....;
return ...;
console.log('新增成功');
} else {
console.log('無法新增');
return ...;
}
return;
}
let coursesLength = addCourse(newCourse);
// 3. 完成上方程式碼後，選出正確敘述
// 選項：
// (1) 最後程式碼會印出 '新增成功'，而變數 coursesLength 的值會變為 2
// (2) 最後程式碼不會印出任何字串
// (3) 如果 newCourse 的 isSoldout 屬性值為 false 時，執行 addCourse(newCourse) 將不會印出任何字串，也不會回傳 courses 陣列的長度
```
## 回報流程
將答案寫在 CodePen 並複製 CodePen 連結貼至底下回報就算完成了喔!
解答位置請參考下圖（需打開程式碼的部分觀看）
<!-- 解答：
```javascript=
let courses = [
{
title: 'Javascript',
members: 400,
id: 1,
isStarted: true,
isSoldout: true,
tasks: ['主線任務', '每日任務']
}
];
let newCourse = {
title: 'Vue3',
members: 300,
id: 2,
isStarted: false,
isSoldout: true,
tasks: ['主線任務', '每日任務']
};
// 1.
courses[0].tasks.push('每日刷題');
// 2.
function addCourse(courseObj) {
if(courseObj.isSoldout) {
courses.push(courseObj);
return courses.length;
console.log('新增成功');
} else {
console.log('無法新增');
return courses.length;
}
return;
}
let coursesLength = addCourse(newCourse);
// 3. 完成上方程式碼後，選出正確敘述
// 答案：(2)
```
-->
回報區
---
| Discord | CodePen / 答案 |
|:----------------:|:----------------------------------------------------------------------------:|
| masterYan#2480 | [Codepen](https://codepen.io/htzwgoqt-the-looper/pen/BaVNrJv?editors=0010)|
| CloThEs#7837 | [Codepen](https://codepen.io/CloThEsZ/pen/RwJPago) |
| YC#2522 | [CodePen](https://codepen.io/YCLu/pen/ZERzXoQ) |
| Amberhh#2465 | [codepen](https://codepen.io/Amberhh/pen/VwdLjaz?editors=0011) |
| Jenny真#7532 | [CodePen](https://codepen.io/wei-chen-wu/pen/PoaqNxE?editors=0010) |
| Ayre#0016 | [Codepen](https://codepen.io/yichunlin09/pen/mdKJEPX?editors=0010) |
| hsiung阿熊#4079 | [Codepen](https://codepen.io/hsiungchi/pen/bGKdpPx) |
| RJRS#9430 | [CodePen](https://codepen.io/RJRS/pen/abKONgd) |
| 出事了阿伯#9923 | [CodePen](https://codepen.io/BradpittLai/pen/NWzqrGe?editors=1010) |
| AuroraC#6539 | [codepen](https://codepen.io/AuroraC/pen/YzvXWGE?editors=1012) |
| albee#9121 | [Codepen](https://codepen.io/albee-chang/pen/MWXweJY?editors=1112) |
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| Tami#6742 | [CodePen](https://codepen.io/wqsdqbjn-the-vuer/pen/XWYbKPp) |
| Rice#8043 | [CodePen](https://codepen.io/riecball/pen/KKepMrp?editors=0011) |
| hungya#0773 | [CodePen](https://codepen.io/hungya777/pen/JjZdKpJ?editors=0011) |
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| Ryan Chiang#6649 | [Codepen](https://codepen.io/ryanchiang/pen/ZERGBJV?editors=0012) |
| Greta#0837 | [CodePen](https://codepen.io/gretali/pen/QWxbGMr) |
| Chung#5951 | [CodePen](https://codepen.io/yuju16/pen/MWXwbQZ?editors=0010) |
| 法希娜#3206 | [CodePen](https://codepen.io/yiiserpf-the-encoder/pen/QWxbKdE?editors=1011) |
| Rr#2215 | [Codepen](https://codepen.io/rufangcheng/pen/qBKdNzo) |
| Winnie#1306 | [Codepen](https://codepen.io/WinnieWuWinnie/pen/jOKPVpv?editors=0010) |
| William Lai#0196 | [Codepen](https://codepen.io/lai-weihan/pen/WNyvoLg) |
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