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 Mammoth May 8, 2019 at 12:27
— Overall performance is slightly above average.

— Sloppy vertical scrolling.
— Total values are missing. (graph #3)
— The third graph and the fifth graphs are slightly slow when filtering.
— Bonus goal is not implemented.
— Dates are distorted on maximum scaling
iPhone 5S, iOS 12.1; LG Nexus 5X, Android 8.1.
Mellow Butterfly May 8, 2019 at 15:28
Thank you for the feedback.

The row with total value is present on third graph, but it has white color in day mode just like in night mode, silly mistake.
White gaps between bars in bar charts
Redmi note 5 / Chrome
Mellow Butterfly Apr 17, 2019 at 17:35
Looks like I forgot handle fractional pixel ratios like 2.75 on Redmi Note 5, this is sad.
Giant Parrot Apr 17, 2019 at 14:12
No header dates animation, the lines on the second chart just disappear instead of fading out, the date scale keeps translucent labels when there is no animation and uses a bad looking narrow font on a wide scale, the lines are too thick, the minimaps have excess side paddings.
Mellow Butterfly Apr 18, 2019 at 10:48
Thank you for the feedback, some comments:

1. There is no animation in range header and tooltip because I think that it looks sloppy. Maybe I should have done animation for checkboxes, for them it looks appropriate.

2. There is no fading out for the second chart because in my app when y axis has nothing to show it just disappears without animation and the empty message is printed. Here is the same logic, because one axis has only one graph, but I agree that in this case it looks strange.

3. Yes, x axis has no animation, it's an intended behaviour. Font for x axis is really looks shitty, maybe I should reduce the ticks count for desktop too, like it's done for mobile version. Line thickness is reduced for mobile too.

4. Overview chart has paddings because I don't like how opaque grips overlay the data. I think that scroll bar window should correlate with the displayed data.
Authors, please move my app's data one dir down. Nobody can view my app since it placed not at '/entry211/' and at '/entry211/build/'
Mellow Butterfly Apr 18, 2019 at 07:29
"We now expect a .ZIP file containing an index.html evoking all the dependent resources using relative addresses." - the requirement was clear, it's only your fault, stop spamming, please.
How long for you "containing " began to mean "containing at the top level."
Mellow Butterfly Apr 18, 2019 at 10:33
Do you think that the organizers had to investigate every work to figure out how to host it? This is obvious that the process will be automated. I feel sorry for you, but spamming it's not the way out.
Kingly Chicken Apr 19, 2019 at 13:52
Wrong preview
Mellow Butterfly Apr 19, 2019 at 15:26
Do you mean left padding? If yes so I already answered to Giant Parrot about it, but if no could you please describe it better?
I think there shouldn't be any 'Views' button for the single column chart.

But the work looks nice in general. Mostly follows the design guidelines. Appreciate your work. No dislike from me.
Chrome 73
Mellow Butterfly Apr 22, 2019 at 06:57
Thank you for the feedback. I decided keep the button for consistency, in my app all graphs can be disabled with further empty message appearing.

I've noticed nasty gaps on the screenshot between columns, what pixel ratio (window.devicePixelRatio) your display has? Something fractional? Or just scaling?
Nobody added any issues yet...