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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 14:48
— Overall performance is average.
— The design does not fully comply with the guidelines.
— The graphs are also distorted on launch (the attached screenshot)
— The third graph is slow when filtering or scaling.
— All the graphs blink when scrolling.
— Long tap is missing.
— Bonus goal is completed, parts of expected functionality are missing, pie chart is slightly slow. 
Samsung Galaxy J7 (2017), Android 8.1.0; iPhone 5S, iOS 12.1
Dreamy Frog May 8, 2019 at 16:23
Thanks for review. We are waiting it.
Great competition, but more hard then first. It is great challenge for developers.

Btw, can not repeat distorted graph how on your screen
Unable to select pie chart segments
Dreamy Frog Apr 18, 2019 at 17:06
Yes, I added it new version
Long touch / long click functionality has not been implemented

(I could see it working in the updated version at public link provided in one of the previous replies.)

Not a bad work at all! Absolutely insane to give such a decent work a dislike. Why so many? No dislike from me for sure!
Chrome 73
Dreamy Frog Apr 22, 2019 at 19:04
Long click added to new version

I do not understand who marked dislikes too. I think, bot system works well :)

Thanks for review. Good luck!
Дмитрий Потапов Apr 17, 2019 at 13:49
Administrators Telegram, where's my graphics? Yesterday I sent a zip archive, but I do not see my work in the list
Dreamy Frog Apr 17, 2019 at 15:22
Sorry, I am not admin of Telegram
Displayed graph window does not map in 1:1 to what's actually on graph.
Dreamy Frog Apr 17, 2019 at 15:27
It is not bug, I show over from this range. Real range is on attached image. Try to max scale and you can see it too
Amount of that "overlook" graph has changes with graphing range as well.
Dreamy Frog Apr 17, 2019 at 15:31
How I wrote above it is not bug. You see real range with left and right padding, no more
strange yaxes animation, long tap not supported
Dreamy Frog Apr 17, 2019 at 21:46
Yes, Y-axis rescale with delay, after mouse/touch end (I try minimizing calc). Long tab I added in new version (I need one day more)
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/'
Dreamy Frog Apr 18, 2019 at 10:43
Sorry man, but try contact to support @dmcatelegram
Giant Parrot Apr 18, 2019 at 12:32
1. The date range and the tooltip texts are not animated.
2. The tooltip design doesn't follow the specification and looks untidy.
3. There are excess lines on the bar chart during a line on/off transition.
MacBook Pro 2015 / Safari 12.1
Dreamy Frog Apr 18, 2019 at 13:31
1. Yes, I know. It is not main request in specification.

2. I like it :) I think tooltip more informative with zoom button like zoom out. About your video: I recalc position and move tooltip to more space by mouse/touch (how you show on center chart). Try it on iPhone5.

3. Yes, I fixed it in new version

Thanks for your comments.
Unable to select time range by dragging in the preview area (outside of the current window).
Dreamy Frog Apr 18, 2019 at 16:55
Sorry, can you record video, what do you mean, what device? What os?
In zoomed-in mode, there's no snapping to day boundaries. Video provided by Telegram clearly showed that snapping.
Dreamy Frog Apr 18, 2019 at 17:05
Telegram show snapping only at last chart. You can check it on my last #5 chart. Other zoom charts, you can change range at any positions
When selecting/deselecting series on area, bar and pie charts there's unnecessary fade to white transition, which produces flashing effect. Also in bar chart there's vertical lines because of that.
Dreamy Frog Apr 18, 2019 at 17:07
There's small jiggle of the grid lines while moving the current time range. Look closely at the top grid labels (78.4K, 3.8K) in the attached video: the actual maximum doesn't change, but they move up and down a bit.
Dreamy Frog Apr 18, 2019 at 17:19
I think you find range where Y changed in round scale, 78445 and 78412 will be 78.4k. You see same result but Y was changed. I think it is normal. 

Thanks for your comments
Values are not displayed in tooltip for stacked percentage chart
Chrome 73
Dreamy Frog Apr 18, 2019 at 21:25
Timeline (navigator) is displayed for single column chart in zoommed mode
Chrome 73
Dreamy Frog Apr 18, 2019 at 21:40
Yes, it is my decision. There we have data with 5 minutes interval, It is interesting to see. Thanks
Nobody added any issues yet...