Open Website

Testing and Issues

You can test this app and submit issues during the testing period of the JavaScript Chart contest.

Entries with serious issues will not be able to win the contest, but even minor issues might be important for overall results.


by rating


Fair Quokka May 8, 2019 at 13:59
— The app is not optimized for mobile devices.
— Y-scale always starts from zero.
— The app is slow when scaling and filtering the third and the fifth graphs.
— Total value is missing for graph #3, percentage for #5.
Samsung Galaxy J7 (2017), Android 8.1.0; iPhone 5S, iOS 12.1
There are not percents on pie graph.
Funny Owl Apr 17, 2019 at 12:41
Other issues for everyone which I know:
1. Y always point to 0
2. When the closest point during hover for the line graph is out of the canvas (in zoom mode when the point is out it) - hover works and show it
3. No smooth animation for Y with disappearing old lines and moving to new ones
4. It in possible to disable less than 2 graphs on the 5th graph, but I wasn't able to reproduce it stable
Charts does not take full width in mobile
Redmi note 5 / Chrome
Funny Owl Apr 18, 2019 at 05:39
I completely don't scale graphs related to dpi and proportions. Width is limited to 500px (as hight bound) and height is 0.8 * width. It's my design implementation lack. As I see now the fastest solution is checking screen proportions and don't limit width if it is mobile in vertical view. The issue exists in all phones with high dpi (width > 500)
Alina Matlakhova Apr 18, 2019 at 17:34
1. On mobile devices in Chrome, you are able to zoom page, which should be blocked, mobile viewport was not used
2. Apps chart:
- issue for 2 charts stay enabled is reproducible when you simply disable options one by one - two left will stay enabled and will not be possible to disable one more
- when you click on buttons randomly and manage to leave one option enabled only - chart is not displayed at all (consistency: often, but not always)
3. Switch to Night/Day mode is in the bottom of the page: not comfortable to switch
Mac OS, Chrome
No long touch / long click functionality has been implemented.

The author has pul lots of efforts into this work and even implemented bonus tasks. No dislike from me.
Chrome 73
Funny Owl Apr 23, 2019 at 01:31
Thank you, Fancy :pray:
Nobody added any issues yet...