chart.js tag

4 questions

1 answers
111 views
0

I want to use the DB value obtained in php for chart.js data.

Nice to meet you.I'm a beginner at javascript, but I found chart.js as a relatively easy library to draw graphs and made a simple sample.In practical use, I think it would be a requirement to set the ...

javascript php json chart.js

2 years ago

1 answers
84 views
0

I want Rails to aggregate values by group (SUM) and display the aggregated results for each group.

What do you want to doI want Rails to aggregate values by group (SUM) and each group's aggregate results to be defined as variables in the controller*After that, we plan to add the defined values to J...

ruby-on-rails ruby postgresql chart.js

2 years ago

1 answers
85 views
0

I want to display different strings on the tooltip Title of the two line graphs.

The two line graphs show this year's sales and last year's sales.$xlabelThis='20/03', '20/04', '20/05', '20/06';$xlabelLast='19/03', '19/04', '19/05', '19/06';One line graph uses $xlabelThis declared ...

javascript chart.js

2 years ago

1 answers
146 views
0

ChartJS Tooltip callback function does not work.

We use ChartJS to display bar graphs.I defined callbacks in the tooltips property to edit the contents of the tooltips, but The tooltip does not change the contents.Do you know the cause?▼ Execution E...

javascript html5-canvas chart.js

2 years ago

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