Rather than listen to the ready event, you need to hook in to an event fired by Turbolinks for every page visit.
Unfortunately, Turbolinks 5 (which is the version that appears in Rails 5) has been re-written, and does not use the same event names as in previous versions of Turbolinks, causing the answers mentioned to fail. What works now is to listen to the turbolinks:load event like so:
$( document ).on('turbolinks:load', function() {
console.log("It works on each visit!")
})