Datatables TypeError: c is undefined

Question

I try to use jQuery DataTables but I get the error

TypeError: c is undefined

I don\'t know what is wrong with my code as I can s

Answer 1

Another day, another solution - this time caused by a style sheet!

After spending hours reducing a gigantic web page to the raw charts code, I found that this error shows (for pie charts) when CSS rules for fonts in the stylesheet contain the calc function.

In our style sheet, this line of code:

html {
  font-size: calc(12px + 5%);
}

...broke the chart. We needed this because our webfont wasn't resizing smoothly and needed a size slightly larger than 12px but smaller than 13px, and this trick forced a better resize.

Overwriting the style rule on the chart widget directly solved the issue:

CSS

html {
  font-size: calc(12px + 5%);
}
.widget {
   font-size: 12px /* Replace the above rule */;
}

JS

var GoogleChart1 = new google.visualization.PieChart(document.getElementById('Chart1'));

HTML