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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 13:57
— Overall performance is poor.
— The app is not optimized for mobile devices.
— The first and the second graphs are broken, no lines are displayed. Appears only after tapping on them (the attached video).
— Scaling causes the graphs to hide, previews appear empty.
— The app is slow when scaling, scrolling and filtering the third graph.
— The graphs take the entire width of the page when viewed from desktop browsers.
Samsung Galaxy J7 (2017), Android 8.1.0; iPhone 5S, iOS 12.1
When switching off a line on y_scaled chart, the related value labes keep displaying. ( I have the same problem in my work).

Overall the work has nice design and it's not fair people have put so many down-votes for it.
Chrome 73
- line rendering bug (see screenshot)
- no text animation
- numbers on Y axes not disappear when disappear one of line in plot #2
- table jumping when become visible in second time
Macbook Pro 13" late 2013 / Opera / macOS 10.14.3
Weird lines in left start of chart
MBP 2018 15, Mojave, Chrome
Posh Owl Apr 17, 2019 at 19:01
Thanks, looks weird indeed.
Tooltip not align by top of chart like in designs
MBP 2018 15, Mojave, Chrome
Posh Owl Apr 17, 2019 at 18:57
There is no restriction on tooltip position on mockups. From the provided design it is not clear where the pointer is.
Stacked: red values not visible
MBP 2018 15, Mojave, Chrome
Posh Owl Apr 17, 2019 at 18:53
Not an issue. If value is too small to display, it shouldn't be displayed. It's a bad idea to draw fake data.
Chart with 2Y: weird lines in start left
MBP 2018 15, Mojave, Chrome
Alexander Prokofyev Apr 18, 2019 at 18:27
First 2 charts have glitches.
Sorry Xperia Z
Very slow
MacBook Pro 2015 / Safari 12.1, Chrome 73
Application always crashing :(
Chrome for Android / Nexus 6p
The values in the tooltips are not in comma-separated format
Chrome 73
Dates are in the wrong format (not the one provided by the contest requirements)
Chrome 73
It seems you forgot pixel ratio multiplying for line width

X values are appearing lately when scrolling and messing up when scaling

2nd chart doesn’t hide y values on filter unchecking
iPhone X
Nobody added any issues yet...