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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 Mammoth May 8, 2019 at 10:27
The app is not optimized for mobile devices.

— Very poor performance.
— The design does not comply with the guidelines.
— Y-scale always starts from zero.
— The app crashes on Samsung J7 (Android 8.1) during vertical scrolling.
— Filtering, scrolling and scaling are slow on iPhone 5S (iOS 12.1)
— A long tap on a data filter doesn't work.
iPhone 5S, iOS 12.1; Samsung J7, Android 8.1
Funny Giraffe May 9, 2019 at 11:46
Thank you for review.
I agree with everything except crashes. Just checked it on Inoi 1 Lite with Android 8.1 Go (it's very slow phone with 512 Mb memory), and had no crashes at all.
I can see disabled charts even after zoom mode
Chart with 2Y not scaled to min values
Macbook Pro 2018 15, Mojave, Chrome
Selecting of button text instead of long tap
Can't expand selected period for pie chart - it's only possible to move the selection window.
not hide series in tooltip
Funny Giraffe Apr 17, 2019 at 13:59
It wasn't specified anywhere in contest conditions. I prefer to show all columns. Anyway, this behavior can be easily changed with only 2 lines of code :)
Filters in zoomIn and zoomOut mode are not bounded - on zoomIn all filters are selected by default, on zoomOut - saved state is recovered
Funny Giraffe Apr 17, 2019 at 14:49
Duplicate of first issue, by Quirky Mammoth.
On bar charts and area chart information pop up doesn't appear for the first (leftmost) value.
All bonus tasks implemented, design is mostly correct - very unfair to have so many down-votes for this work.

Small issue:
Pie chart has tooltip from the main percentage chart.

Percents are written in dark color - but that is a very small issue and could be ignored I think.
Chrome 73
Funny Giraffe Apr 21, 2019 at 07:33
Thank you! I tried to implement this pie chart in couple hours before contest end, and that's why i have those bugs :)
Another small issue is with single column chart.
There is a button displayed for it in standard mode.
There is a timeline (navigator) displayed in zoomed mode.
Chrome 73
If you zoom in the stacked percentage chart on the final date or several days preceding or the first date or several days following - the pie chart timeline is done for less than 7 days.
Also if you zoom in the last date there - the pie chart is created for the previous date and the final one is completely omitted in timeline.
Chrome 73
The minimap corners are not round
MacBook Pro 2015 / Safari 12.1
Nobody added any issues yet...