jQuery dataTable doesn't show sort icon

Question

I am trying to use a jQuery dataTable plugin. The problem is that the sort icon (this arrow which point in which direction data is actual sorted) is not displayed.

M

Answer 1

I had this problem and it took me an hour to discover that I was not linking to a required stylesheet. In my case, I had:

but I also needed to add:

for the sort icons to show up. This is likely a bootstrap-only solution, but if you're having this problem, you might make sure you've got the right stylesheets linked.