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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 12:08
— Overall performance is average.

— Graphs #3, #4 #5 are slow when scrolling and filtering.
— Y-scale starts from zero (the first graph).
— 'Total' values is missing for graph #3, percentage is missing for graph #5. Long tap is not implemented.
— Bonus goal is implemented, however data info on the pie chart is missing.
iPhone 5S, iOS 12.1; LG Nexus 5X, Android 8.1
No long button tap handling
- no percentage in chart #5
- no year in top right corner
- no actions for long click on the buttons
- lines under the orange numbers in plot #2
Jolly Cobra Apr 18, 2019 at 19:55
Hey, thanks for the review! Those yellow lines was a hard decision. However, it's not technically possible to use the same grid lines for both charts, because Y-axes have two essential features:

1. They have fixed scale levels so we can always have lovely labels like "50" or "250", but never "49" or "252".

2. The axes have stretching height and flexible rows amount, which allows making smooth transitions between different levels and also avoiding redundant label updates, which exists in many other apps.

Even if we'd find a way to make both Y-axes "fit" at some point by both scale step and row height, we would then face issues with animation, when chart lines go into opposite directions. It will cause one axis to "grow up" and the other to "shrink down", so at some point, the labels and the grid lines will also go the opposite way.
incorrect work after landscape mode
Wrong timeline (navigator) for pie chart
Chrome 73
The initial date range selection is set to almost 4 months in the middle of the year, unlike the suggested by contest screenshots final month
Chrome 73
Wrong date selection - First date of the chart gets cut off; Last date of the chart is not displayed in the title.
Chrome 73
Date formats are not per the contest screenshots
Chrome 73
No tooltips with names and values for pie chart sectors
Chrome 73
Tooltip of the main percentage chart is sometimes shown for the pie chart
Chrome 73
No percentages displayed in the main tooltip of the stacked percentage chart
Chrome 73
The date is not updated in the title on navigating in the zoommed mode
Chrome 73
Something is wrong with y-axis labels (horizontal lines) for the zoommed mode of the first chart.
Chrome 73
Inconsistent state of chips (a.k.a. selectors, buttons) between the standard and zoommed modes. Either the buttons should get checked, or the lines should be hidden - in any way the shown lines should correspond to the checked buttons.
Chrome 73
Jolly Cobra Apr 18, 2019 at 19:58
Thank you for the review, nice points! I wish I had a little more time to test it all out.
Unable to select time range by dragging in the preview area (outside of the current window).
Jolly Cobra Apr 18, 2019 at 19:58
Hey! Not sure what you mean "outside of the current window"?
Not working in IE11 (ES5) and no bonus goals. Animated changes in throttle function queued and you can skip the intermediate steps in future. But I like for the other smooth animations and implement text change. Voted.
Windows 8/IE11/Chrome 73.0.3683.103
Jolly Cobra Apr 21, 2019 at 16:57
Hey! Thanks for the review. Yes, only Edge is supported. I do have bonus goals, or what do you mean, any specific browser? I do also have throttling and debouncing, where do you think it’s not efficient? Thanks for your vote too!
Nobody added any issues yet...