此為國外免費課程 JS30 的練習筆記紀錄，每個子資料夾的 index-Harry.html 為自己寫的程式碼
以下為課程官網: https://javascript30.com/
課程的 Github Repo: https://github.com/wesbos/JavaScript30
| No | 主題 | 筆記 | DEMO |
|---|---|---|---|
| 01 | JavaScript Drum Kit | 筆記 | DEMO |
| 02 | JS and CSS Clock | 筆記 | DEMO |
| 03 | CSS Variables | 筆記 | DEMO |
| 04 | Array Cardio Day 1 | 筆記 | DEMO |
| 05 | Flex Panel Gallery | N/A | DEMO |
| 06 | Type Ahead | 筆記 | DEMO |
| 07 | Array Cardio Day 2 | N/A | DEMO |
| 08 | Fun with HTML5 Canvas | 筆記 | DEMO |
| 09 | Dev Tools Domination | 筆記 | DEMO |
| 10 | Hold Shift and Check Checkboxes | N/A | DEMO |
| 11 | Custom Video Player | 筆記 | DEMO |
| 12 | Key Sequence Detection | N/A | DEMO |
| 13 | Slide in on Scroll | N/A | DEMO |
| 14 | JavaScript References VS Copying | 筆記 | DEMO |
| 15 | LocalStorage | 筆記 | DEMO |
| 16 | Mouse Move Shadow | 筆記 | DEMO |
| 17 | Sort Without Articles | N/A | DEMO |
| 18 | Adding Up Times with Reduce | N/A | DEMO |
| 19 | Webcam Fun | 筆記 | DEMO |
| 20 | Speech Detection | 筆記 | DEMO |
| 21 | Geolocation | 筆記 | DEMO |
| 22 | Follow Along Link Highlighter | 筆記 | DEMO |
| 23 | Speech Synthesis | 筆記 | DEMO |
| 24 | Sticky Nav | N/A | DEMO |
| 25 | Event Capture, Propagation, Bubbling and Once | N/A | DEMO |
| 26 | Stripe Follow Along Nav | N/A | DEMO |
| 27 | Click and Drag | 筆記 | DEMO |
| 28 | Video Speed Controller | N/A | DEMO |
| 29 | Countdown Timer | 筆記 | DEMO |
| 30 | Whack A Mole | 筆記 | DEMO |