Add Sprockets JS back to Rails 6 apps

add_sprockets_js.md

Add Sprockets JS back to Rails 6 apps

1. Create folder app/assets/javascripts

2. Create file app/assets/javascripts/application.js

3. Add some JS inside. You can use directives; e.g.:

   //= require_tree .
   
   console.log('howdy');

4. In app/assets/config/manifest.js, add:

   //= link application.js

5. In app/views/layouts/application.html.erb, add:

   <%= javascript_include_tag 'application', 'data-turbolinks-track': 'reload' %>

That's it. If you used the example JS above, you should see "howdy" in the JS console when you visit a page.