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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 13:09
— Overall performance is below average.
— Current implementation of vertical scrolling makes it easy to swipe the page up/down when scrolling or scaling the graphs with a slider, also when filtering (the attached video). 
— The app is slow when scaling, scrolling and filtering the third graph. 
— Parts of expected animations are missing on the fifth graph when filtering.
— We also faced a broken long tap on LG Nexus 5X, Android 8.1.0.
— The graphs are broken (as explained Bold Wolf) on iPhone 5S.
Samsung Galaxy J7 (2017), Android 8.1.0; iPhone 5S, iOS 12.1
No graphs.
Samsung Galaxy S9 , Android 8.0.0, Chrome 73.0.3683.90
Charts don't work on my device. I attached error in files, which appeared in console.
Laptop / Chrome 73.0.3683.103 (Official Build) (64-bit) / Windows 10
Wise Boar Apr 17, 2019 at 14:19
Something went wrong with localStorage, not with chart library. I should have better tested this code. Thanks for pointing me up on this!
- design is not like on mokups

- no animations on value change in interval or tooltip

- night-mode doesnt change buttons colors

- fixed page width: doesn't fit desktop and page scrolls horizontally on mobile

- page zooming allowed on mobiles

- if mouse pressed on mini-map border and released somewhere out of column with charts, then view keep resizing on mousemove even without mouse button being down

- charts named "Apps" and "Messages" - huge perfomace issues on drugging selected interval, chanding selected interval borders, unchecking lines

- "Apps" - no animation on check-uncheck

- "Messages" - bad-looking animation on uncheck, see screenshot
BQ strike mini, 4x 1.3Hhz, 1Gb RAM, Chrome, Android 7
Wise Boar Apr 17, 2019 at 23:08
- Totally agree with design issues. 

- In terms of the contest fixed page width and mouse events do not belog to mobile usability, but anyway, yeah, it should work properly. 

- "Messages" - bad-looking animation is some kind of feature, not bug. But I admit that someone thinks it's a problem. Could it be better? Of course

- Possible performance issues is a real problem

Thanks for review!
Unfortunately doesn't work in Chrome (most used web browser)
MBP 2018 15, Chrome, Mojave
Wise Boar Apr 24, 2019 at 21:11
This is very strange and seems like network/cache problem. Cause I've alse use MBP 2018, Chrome, Mojave and everything works well. Could you try again on another device or browser?
- bottom level changes instantly (though top one is animated)

- disabled lines still affect top and bottom levels
Wise Boar Apr 17, 2019 at 23:15
- In fact its not true. Changes on mini map are animated, but has different animations delay. Seems like its bad UX solution

- Need more info on it. In what chart you stuck with it?

thanks in advance!
- disabled lines still affect top and bottom levels
Reproduce on all charts.
Mac os - safari, chrome
Wise Boar Apr 18, 2019 at 12:11
Oh god, lost it on the last refactoring. Thank you for finding it! Hope to fix this in possibly bugfix release.
Long touch / long click functionality has not been implemented
Chrome 73
Wise Boar Apr 23, 2019 at 10:52
Please, use real device not devtools and see what's happening. Long tap functionality is implemented. Respectfully, Wise Boar.
The switched off button text is not centered. A very small issue and probably could be ignored.

Appreciate your efforts and time. Sorry your work has got so many dislikes - I disagree that it should have. No dislike from me.
Chrome 73
Wise Boar Apr 23, 2019 at 11:01
Thanks for the kind words!

Personally i don't like buttons that change size depending on state and there is no switch off states in the guidelines, so it turned out as it is
Nobody added any issues yet...