md`# Day Twenty-Eight (Task 9-2-9), 2020-09-21`
md` ## Task 9-2-9
- 9-2-9. Based on codes from Task 9-2-3. Make changes so that every time you click the trigger, a new integer between 0 and 24 will be added. Update both the bars and the text labels. The newly generated bars and labels will move from the right border of the SVG to its proper place. Make the transition last for half a second. *Hint* : Use \`.merge()\`.
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md`
Go to [Day 29](https://observablehq.com/@hongtaoh/day-twenty-nine-2020-09-22).
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