update readme

Author: a90100

readme.md

@@ -35,8 +35,8 @@ https://github.com/wesbos/JavaScript30
 | 23 | Speech Synthesis | [筆記](https://github.com/a90100/JavaScript30/tree/master/23%20-%20Speech%20Synthesis) | [DEMO](https://a90100.github.io/JavaScript30/23%20-%20Speech%20Synthesis/index-Harry.html) |
 | 24 | Sticky Nav | N/A | [DEMO](https://a90100.github.io/JavaScript30/24%20-%20Sticky%20Nav/index-Harry.html) |
 | 25 | Event Capture, Propagation, Bubbling and Once | N/A | [DEMO](https://a90100.github.io/JavaScript30/25%20-%20Event%20Capture%2C%20Propagation%2C%20Bubbling%20and%20Once/index-Harry.html) |
-| 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  |  | [DEMO]() |
+| 26 | Stripe Follow Along Nav | N/A | [DEMO](https://a90100.github.io/JavaScript30/26%20-%20Stripe%20Follow%20Along%20Nav/index-Harry.html) |
+| 27 | Click and Drag | [筆記](https://github.com/a90100/JavaScript30/tree/master/27%20-%20Click%20and%20Drag) | [DEMO](https://a90100.github.io/JavaScript30/27%20-%20Click%20and%20Drag/index-Harry.html) |
+| 28 | Video Speed Controller | N/A | [DEMO](https://a90100.github.io/JavaScript30/28%20-%20Video%20Speed%20Controller/index-Harry.html) |
+| 29 | Countdown Timer | [筆記](https://github.com/a90100/JavaScript30/tree/master/29%20-%20Countdown%20Timer) | [DEMO](https://a90100.github.io/JavaScript30/29%20-%20Countdown%20Timer/index.html) |
+| 30 | Whack A Mole  | [筆記](https://github.com/a90100/JavaScript30/tree/master/30%20-%20Whack%20A%20Mole) | [DEMO](https://a90100.github.io/JavaScript30/30%20-%20Whack%20A%20Mole/index-Harry.html) |