---
tags: JS 直播班 - 2022 秋季班
---
# 🏅 Day 05 - 賦值運算子與記憶體觀念

### 題目

以下兩題請合併為一份 CodePen 繳交，並透過「註解」進行回答。

問題一
---
了解賦值運算子，並計算出最後 console.log 印出的結果

let a = 1;
let b = 2;
a += 30;
a--;
b - 1;
a -= b;

console.log(a);
console.log(b);

問題二
---
請說明以下程式碼最後共有幾個記憶體空間

let a = '3';
let b = 3;
let c = a*b;
a + 1;

## 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：

問題一：
a: 28
b: 2
（陷阱：b - 1 那行並未賦值）

問題二：
5 個

a -> '3'
b -> 3
c -> 9
1
'31'
-->

回報區
---

| Discord | CodePen / 答案 |
|:----------------:|:----------------------------------------------------------------------------:|
| 嗶嗶羊#8042 | [codepen](https://codepen.io/mazizlte-the-typescripter/pen/BaxGjjL?editors=0011) |
| 出事了阿伯#9923 | [codepen](https://codepen.io/BradpittLai/pen/zYjJjKQ?editors=1010) |
| AuroraC#6539 | [codepen](https://codepen.io/AuroraC/pen/YzLOLaN) |
| CofCat#9226 | [codepen](https://codepen.io/cofcat456/pen/OJZojZQ?editors=1111) |
| hsiung阿熊#4079 | [codepen](https://codepen.io/hsiungchi/pen/ExLeLZq) |
| 君Jyun#0147 | [codepen](https://codepen.io/Okaybeok/pen/VwxGxMK?editors=1011) |
| 威爾#1694 | [CodePen](https://codepen.io/WILL_Wu/pen/mdLGLKM) |
| 竹輪#3335 | [CodePen](https://codepen.io/chikuwa0120/pen/oNdPdPY) |
| Amberhh#2465 | [Codepen](https://codepen.io/Amberhh/pen/XWqPqxW?editors=1011) |
| kuku#3118 | [Cpdepen](https://codepen.io/mengting-ku/pen/QWrVrZJ?editors=0010) |
| JackC#0411 | [CodePen](https://codepen.io/key0329/pen/qBYMYQN) |
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| Clara#1275 | [CodePen](https://codepen.io/bsupixqu/pen/LYmJmqb?editors=1010) |
| CloThEs#7837 | [CodePen](https://codepen.io/CloThEsZ/pen/LYmJmMb) |
| 薯餅#3581 | [CodePen](https://codepen.io/ColdingPoTaTo/pen/MWGqGzd) |
| cotton#7163 | [CodePen](https://codepen.io/cottonT/pen/KKRxREE?editors=1011) |
| 魚子醬#5220 | [CodePen](https://codepen.io/haihsuan/pen/VwxGxoz) |
| Judy ☻#7874 | [CodePen](https://codepen.io/hsiaohan/pen/BaxOxXO?editors=1011) |
| YI#0863 | [CodePen](https://codepen.io/YI0305/pen/ExLeRYK?editors=0012) |
| albee#9121 | [Codepen](https://codepen.io/albee-chang/pen/RwyYJwx) |
| 大衛#4869 | [Codepen](https://codepen.io/exnsrpjc/pen/BaxOVBO?editors=0010) |
| jackson204#6363 | [Codepen](https://codepen.io/jackson204/pen/yLjxELm) |
| 教練#6451 | [Codepen](https://codepen.io/monkeybear721/pen/WNJgybm) |
| hungya#0773 | [Codepen](https://codepen.io/hungya777/pen/oNdPyNW?editors=0011) |
| Ron Liang #7277 | [Codepen](https://codepen.io/ron-go/pen/zYjJavq) |
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| Rr#2215 | [Codepen](https://codepen.io/rufangcheng/pen/ExLeewY) |
| CJ07#0176 | [codepen](https://codepen.io/cjtseng07/pen/zYjJJKQ?editors=0012) |
| Iris_#8462 | [codepen](https://codepen.io/irissamy/pen/xxjaJda?editors=1111) |
| 0xWilliam #8796 | [Codepen](https://codepen.io/0xWilliam0322/pen/OJZoomx?editors=0010)
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| cbs#9007 |[CodePen](https://codepen.io/wasdjk/pen/abGaPKz?editors=0010)|
| Ting#8449 |[Codepen](https://codepen.io/liara/pen/abGaXOZ)|
|Cliff#4606|[Copepen](https://codepen.io/Cliff_hex/pen/yLjxeyx)|
|Data#9297|[Copepen](https://codepen.io/kirakira72/pen/NWMLovV)|
|yen#5757|[Copepen](https://codepen.io/TZU-HUANG-YEN/pen/oNdPgqY)|
|mou#2215|[Copepen](https://codepen.io/shihchiehlan/pen/vYjzPZq?editors=0010)|
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|Mia小福#4473|[Copepen](https://codepen.io/a0950271/pen/dyeqrZL)|
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|勁辣雞腿寶#5817| [CodePen](https://codepen.io/orz311013/pen/Rwyebwj?editors=0010)|
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|pidder#7315|[Codepen](https://codepen.io/liaoben/pen/abGRowp)|
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| YU #0618 | [Cpdepen](https://codepen.io/yoken_/pen/VwxGaJq) |
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