Filter Entries within a page dynamically based on category I'm creating a portfolio page, and I have a summary list of project entries displayed. At the top of the page, I've got a dropdown displaying a Category field. e.g. craft.categories.group('industry')

My question: Is it possible to display/filter entries of a particular category dynamically/immediately when a dropdown entry is selected (using only Twig)? Or do I have to use Javascript?

Sorry for this basic question.
You will need to use some JavaScript, since all twig code is parsed on the server and sent to the browser as HTML.