---
tags: 2022 React 新手讀書會
---
昨天已經了解要如何使用 props 傳遞資料，今天來練習一個常用的技巧，也就是將陣列資料使用 .map 一一傳到元件做使用。用一個簡單的範例如下：

function Child({ data }) {
  return <li> {data} </li>
};

const numbers = [1, 2, 3, 4, 5];
numbers.map((number) =>
  <Child data={number} />
);

可以將 numbers 這個陣列一一傳到 Child 元件，並顯示資料。
比較常見的情境像是文章目錄，會把每一筆摘要（標題、圖片）等等顯示到畫面上，而畫面可能會是一張一張卡片的樣式，這時候就很適合用到這個方法，又或是 Select 的 option 選項，也可以使用此方式來處理。

## 題目
請複製 （右下角 fork）這個[範例](https://codepen.io/hexschool/pen/GRxmjoZ)，並使用 .map 和 props 技巧將文章資料的標題和內文依序列出。

## 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：

function Child({ post }) {
  return <li> 
    <h3>{post.title} </h3> 
    <p>{post.body}</p> 
  </li>
};

function Example() {
  // posts 資料
  return (
    <div>
      <ul>
        {posts.map(post => {
          return <Child post={post} />
        })}
      </ul>
    </div>
  );
}
const root = ReactDOM.createRoot(document.getElementById('root'));
root.render(<Example />);

-->

回報區
---

| Discord | CodePen / 答案 |
|:-----------------------:|:----------------------------------------------------------------------------:|
| Rice#8043 | [CodePen](https://codepen.io/riecball/pen/VwXMzxg?editors=1010) |
| Eric Su#7798 | [CodePen](https://codepen.io/wc-su/pen/bGvjppM) |
| Vita Ora#4585 | [CodePen](https://codepen.io/showlovezz/pen/LYdJOom?editors=0010) |
| DIANAxAKKO#4298 | [Codepen](https://codepen.io/redfire29/pen/NWYLwQq?editors=0010) |
| 布魯諾#7239 | [Codepen](https://codepen.io/bruno-yu/pen/vYRzWqv?editors=1011) |
| 真．穎旻粉撕#4995 | [Codepen](https://codepen.io/gbnbihif/pen/GRxXObL) |
| huch09#1426 | [Codepen](https://codepen.io/subarashii-huch09/pen/rNdZpVz) |
| Ayre#0016 | [Codepen](https://codepen.io/yichunlin09/pen/qBoMpEK?editors=0010) |
| 棒腿#9350 | [Codepen](https://codepen.io/frankHsu/pen/LYdJeVB?editors=0010) |
| JarDar#6980 | [codepen](https://codepen.io/jardarpen/pen/xxWapRz) |
| C#4593 | [CodePen](https://codepen.io/ShaniMa/pen/MWVqrpv) |
| yunyun#5215 | [CodePen](https://codepen.io/yun_yunni/pen/mdxGpjy) |
| AllenW#1132 | [CodePen](https://codepen.io/AllenW/pen/yLKxpab?editors=1011) |
| yuyu#6310 | [CodePen](https://codepen.io/yuyu0905/pen/QWmVaqd?editors=1011) |
| L0F0#8733 | [CodePen](https://codepen.io/l0f0/pen/ExEeobp?editors=0010) |
| Morris#8755 | [Codepen](https://codepen.io/morrisss/pen/abYaEoE?editors=1010) |
| ChloeLo#4858 | [CodePen](https://codepen.io/chloelo/pen/zYWJpPa) |
| RON#2813 | [CodePen](https://codepen.io/Ron115/pen/eYMLyVV) |
| Vada Chen#2055 | [CodePen](https://codepen.io/vadachen/pen/KKoxZga?editors=1010) |
| React-慧茹(拉拉醬)#3414 | [CodePen](https://codepen.io/lala-lee-jobs/pen/abYaEMX) |
| 露易莎#7673 | [Codepen](https://codepen.io/louisa-lin/pen/abYaEEa?editors=1011) |
| SHIN#6075 | [Codepen](https://codepen.io/shin9626/pen/oNqPEvv) |
| Carolkiki2003#7399 | [Codepen](https://codepen.io/riecball/pen/VwXMzxg) |
| hiYifang #0736 | [Codepen](https://codepen.io/hiYifang/pen/OJvozKW) |
| LEO#7779 | [Codepen](https://codepen.io/nekorice/pen/GRxXyQg) |
| YuZhun#1362 | [Codepen](https://codepen.io/danzhun/pen/poLOaRZ?editors=0110) |
| Bumble幫啵#0255 | [Codepen](https://codepen.io/lmpzezvw-the-lessful/pen/jOzvZPZ) |
| hw#0715 | [Codepen](https://codepen.io/Lhwei/pen/bGvxaeV) |
| HedgehogKU | [CodePen](https://codepen.io/hedgehogkucc/pen/ExEeQoY?editors=1010) |
| Wu#0167 | [CodePen](https://codepen.io/Xander0705/pen/MWVqQmz?editors=1111) |
| rainbow#3329 | [CodePen](https://codepen.io/g901612002/pen/JjLapwX?editors=1011) |
| 翔#0859 | [CodePen](https://codepen.io/energy95272z/pen/gOedvyv) |
| Yanyan#3555 | [Codepen](https://codepen.io/wei-yi-lee/pen/ZExMxzz?editors=1010) |
| Neal#0665 | [Codepen](https://codepen.io/neallkf/pen/eYMLMJN?editors=0010) |
| Robert Lo#9653 | [Codepen](https://codepen.io/Robert-Lo/pen/QWmVQeY?editors=1010) |
| LinaChen#1796 | [Codepen](https://codepen.io/LinaChen/pen/MWVqQgX) |
| EvaLin#4546 | [Codepen](https://codepen.io/evalin0316/pen/wvmEmMQ?editors=1010) |
| 黃士桓#7654 | [codePen](https://codepen.io/shr-huan-huang/pen/vYRzRZR) |
| 山貓(焜)#7041 | [codePen](https://codepen.io/nopeta/pen/dymqmJd) |
| 威爾#1694 | [CodePen](https://codepen.io/WILL_Wu/pen/QWmVmrL) |
| wenyun#2362 | [CodePen](https://codepen.io/wenyuncc/pen/qBoMoeY?editors=0011) |
| Ada | [codePen](https://codepen.io/zggsoagv-the-scripter/pen/yLKxjBV) |
| 無名#6427 | [codePen](https://codepen.io/Nomoney/pen/abYaGdY?editors=1010) |
| Mao#5230 | [codePen](https://codepen.io/taomaomao/pen/abYaKOx?editors=0010) |
| niel#2413 | [Codepen](https://codepen.io/danielhsu/pen/bGvxKBY) |
| wiimax#4564 | [Codepen](https://codepen.io/willismax/pen/yLKxEKG) |
| Mr.Sean#3825 | [Codepen](https://codepen.io/sean_1215/pen/RwMYJzL?editors=1010) |
| 吉利#3810 | [Codepen](https://codepen.io/gillianyy/pen/eYMLmZe) |
| Nico#8739 | [Codepen](https://codepen.io/Nicof2e/pen/BarOPmM) |
| JasonLu | [Codepen](https://codepen.io/wnptocip/pen/NWYLBLQ?editors=0010) |
| Midnightdinner#6220 | [Codepen](https://codepen.io/bruno-yu/pen/vYRzWqv) |
| easton#3863 | [Codepen](https://codepen.io/EastonIsCodingNow/pen/NWYLOWv) |
| Stanley#2505 | [Codepen](https://codepen.io/bigbearada/pen/wvmEQZV) |
| Yihan#5560 | [Codepen](https://codepen.io/h513hh513h/pen/LYdJXVx?editors=0010) |
| lingxuan | [Codepen](https://codepen.io/lingxuan0618/pen/GRxXPrV?editors=1010) |
| GL#2256 | [Codepen](https://codepen.io/4genie/pen/YzaOdao) |
| yiling#4054 | [Codepen](https://codepen.io/lin010/pen/dymqaNo?editors=1011) |
| NinaKuo#3332 | [Codepen](https://codepen.io/ninakuo0814/pen/WNzgJRx) |
| Timothy#5863 | [Codepen](https://codepen.io/timothy_hippo/pen/mdxGGMN?editors=1111) |
| Joechiboo#3960 | [Codepen](https://codepen.io/joe-chiboo/pen/dymqxrB) |
| Kenge#3690 | [Codepen](https://codepen.io/pgkusn/pen/oNqavbv) |
| Wins#8457 | [Codepen](https://codepen.io/winszhuang/pen/JjLmPpj) |
| Irene#7932 | [Codepen](https://codepen.io/ntjtcxpt-the-animator/pen/YzaJKeW?editors=1010) |
| aki | [codepen](https://codepen.io/aki168/pen/yLKRBxG) |
| Alex Liao#8538 | [CodePen](https://codepen.io/alex0207s/pen/jOzeNgX) |
| TedWang | [CodePen](https://codepen.io/wangtaiyan/pen/oNqaNNB?editors=0010) |
| shin#5792 | [CodePen](https://codepen.io/hah1030/pen/poLxvre?editors=0011) |
| Dylan_Lin#7320 | [CodePen](https://codepen.io/lin-dylan/pen/JjLaMov) |
| 許揚民 Evan#4546 | [CodePen](https://codepen.io/gitevanhsu/pen/KKoGVem?editors=0011) |
| Otis#8455 | [CodePen](https://codepen.io/humming74/pen/KKoGVQW?editors=1011) |
| Rocker#6235 | [CodePen](https://codepen.io/RockerLi/pen/rNdqeqg) |
| Rikku#1756 | [CodePen](https://codepen.io/rikkubook/pen/KKoGzbG?editors=1011) |
| Claire#2116 | [CodePen](https://codepen.io/claire-chang-the-bashful/pen/RwMeRMy) |
| Shau#6400 | [CodePen](https://codepen.io/shau-chen/pen/LYdgZqe) |
| 灰塵貓#7994 | [Codepen](https://codepen.io/rjk66268/pen/qBoJNep?editors=0010) |
| kyle890721#1016 | [Codepen](https://codepen.io/KYLE890721/pen/OJvBbox) |
| Chelly#6129 | [Codepen](https://codepen.io/chellyhsu/pen/ZExqLrG) |
| yoshidc#0455 | [Codepen](https://codepen.io/yoshiyyc/pen/WNzapRQ) |
| 城堡#2126 | [Codepen](https://codepen.io/tthcastle/pen/MWVPpQo) |
| 薯餅#3581 | [Codepen](https://codepen.io/ColdingPoTaTo/pen/yLKRbBp) |
| Tuhacrt#0008 | [Codepen](https://codepen.io/Tuhacrt/pen/yLKRbWZ) |
| charlottelee849#0366 | [Codepen](https://codepen.io/charlotte-lee/pen/dymgRrd?editors=1010) |
| emma#3398 | [Codepen](https://codepen.io/itsems/pen/gOeBxgJ?editors=0011) |
| 雪莉#4827 | [Codepen](https://codepen.io/utshang216/pen/rNdqzjw) |
| JC#8658 | [Codepen](https://codepen.io/jcsamoyed/pen/rNdqzvp) |
| Kelvin#3296 | [Codepen](https://codepen.io/kelvinchang/pen/qBoJVPr) |
| 𝓛𝓊𝒸𝓎#8635 | [Codepen](https://codepen.io/lucygirl/pen/ZExqryM) |
| 雅帆 | [Codepen](https://codepen.io/yafanchung/pen/YzaJeJW) |
| 魚魚#0937 | [Codepen](https://codepen.io/fish0522/pen/yLKRqOr) |
| 彼得#1923 | [Codepen](https://codepen.io/shiou-ho/pen/QWmZBoe) |
| Tsue#9284 | [Codepen](https://codepen.io/AlbertoLL/pen/qBoJyzP?editors=1010) |
| 座標33129#8748 | [Codepen](https://codepen.io/ad80352/pen/WNzaYvg?editors=0010) |
| Kimi#2092 | [Codepen](https://codepen.io/a3216lucy/pen/KKoxZaa)|
| 楓之聲#6945 | [Codepen](https://codepen.io/sshane258/pen/gOeBVgE)
| Anson#3594 | [Codepen](https://codepen.io/huanmingchang/pen/RwMqWmy?editors=1111) |
| Arista#5802 | [Codepen](https://codepen.io/arista-hsieh/pen/vYRQLMw) |
| 葉秋#2335 | [Codepen](https://codepen.io/as880074/pen/yLKQeZb?editors=1111) |
| 蘇蘇#0426 | [Codepen](https://codepen.io/sabine1123/pen/gOeQrVR) |
| ZengZeng | [Codepen](https://codepen.io/tyzyoko/pen/YzaJRNQ) |
|鮪杰伯伯|[codepan](https://codepen.io/wei-nie/pen/MWVzpOb?editors=1010)|
|moitw|[codepen](https://codepen.io/tsuifei/pen/XWExzBK?editors=1011)|
|Mori#5582|[codepen](https://codepen.io/flower9312/pen/QWmJmGV)|
|hsiuhsiu #7412|[codepen](https://codepen.io/hsiuhsiu/pen/YzaRdye?editors=1010)|
|眼睛 #0314|[codepen](https://codepen.io/thrizzacode/pen/XWEyGqW?editors=0010)|
|KuoMin#4931|[codepen](https://codepen.io/KuoMin/pen/ZExmPgY?editors=1010)|
|JimmyChang#5558|[codepen](https://codepen.io/JimmyChangWenChi/pen/oNqQrbj)|
|kancheng#3915|[Codepen](https://codepen.io/kancheng/pen/WNzYVVw)|
|minmin#8960|[codepen](https://codepen.io/minfan-chen/pen/NWYePBW?editors=1010)|
|anby#7112|[codepen](https://codepen.io/andy-ch-bo-an/pen/OJvdvpW)|
|CofCat#9226|[codepen](https://codepen.io/cofcat456/pen/rNdPvqe)|
|陳sam#9117|[Codepen](https://codepen.io/euldpliv/pen/vYRbPQX)
|Rose#1669|[Codepen](https://codepen.io/Rose-Wu/pen/gOeEOvL)
|eching#9183|[Codepen](https://codepen.io/echin/pen/abYMJJO?editors=1010)
|紅豆豆#0518|[Codepen](https://codepen.io/zoseqlpc/pen/ZExZEKv?editors=0010)
|larahuang#8309|[Codepen](https://codepen.io/lara1105huang/pen/QWmPBzg)
|hobby#6565|[Codepen](https://codepen.io/hobbyling/pen/jOzoPYg)|
|Eileen#6454|[Codepen](https://codepen.io/Eileen-io/pen/LYdoEqN)|
|喬喬#2824|[Codepen](https://codepen.io/joanne-wei/pen/XWEwQwL)|
|JimHwang#3594|[Codepen](https://codepen.io/jimh1129/pen/NWYZPzw?editors=1111)|
|Li-Ninja#0471|[Codepen](https://codepen.io/li-ninja/pen/ZExdGMY?editors=0011)|
|Overy#4545|[Codepen](https://codepen.io/overy-tsai/pen/vYRqJwK)
|Kyle Lin#0561|[Codepen](https://codepen.io/thenkyle/pen/oNqKGNN)
|Jordan|[Codepen](https://codepen.io/jordan-ttc-design/pen/OJZNyaN?editors=1011)
|SleepWalk#1635|[Codepen](https://codepen.io/arthurliinn/pen/XWYqzgp?editors=0010)
|Eshiunm|[CodePen](https://codepen.io/Code-My/pen/OJGorvq)|