Javascript file is not updated in development with Rails - ruby-on-rails-3

Question

I changed a JS file under app/assets/javascripts but it is still the same. I deleted the file and re-created but the content is still the old one. This is my development.rb file:
App::Application.configure do
# Settings specified here will take precedence over those in config/application.rb
config.serve_static_assets = false
# In the development environment your application's code is reloaded on
# every request. This slows down response time but is perfect for development
# since you don't have to restart the web server when you make code changes.
config.cache_classes = false
# Log error messages when you accidentally call methods on nil.
config.whiny_nils = true
# Show full error reports and disable caching
config.consider_all_requests_local = true
config.action_controller.perform_caching = false
# Don't care if the mailer can't send
config.action_mailer.raise_delivery_errors = false
# Print deprecation notices to the Rails logger
config.active_support.deprecation = :log
# Only use best-standards-support built into browsers
config.action_dispatch.best_standards_support = :builtin
# Do not compress assets
config.assets.compress = false
# Expands the lines which load the assets
config.assets.debug = true
config.action_mailer.delivery_method = :letter_opener
config.action_mailer.default_url_options = { :host => "lvh.me:3000" }
# Raise exception on mass assignment protection for Active Record models
# config.active_record.mass_assignment_sanitizer = :strict
# Log the query plan for queries taking more than this (works
# with SQLite, MySQL, and PostgreSQL)
config.active_record.auto_explain_threshold_in_seconds = 0.5
config.log_tags = [:uuid, :remote_ip]
end
The JS file is loaded inside the header tag with this code:
<script src="/assets/deals.js?body=1" type="text/javascript"></script>
which is the normal way JS is loaded in development

Answer 1

Try to clear precompiled assets:
bundle exec rake assets:clean

Answer 2

Try to delete the tmp folder and then restart the server - rails s.
That will do it.

Answer 3

bundle exec rake assets:clean and then bundle exec rake assets:precompile

Answer 4

Or delete the public/assets folder, and restart the app

Answer 5

Check for sprockets-rails gem
In my case I upgraded to Rails 7, and for some reason, the javascript files were not updated. Spent many hours trying to work out why.
I finally discovered the culprit - in my case - somehow, I had removed the sprockets-rails gem. I could have easily lost many months trying to figure this out.

Answer 6

I have similar issue in my app running Rails 6 and 7. When I add console.log into one of the javascript controllers there won't be any log in the browser console, and it looks like the console.log is not even there.
I have been having issue for quite some time and have not been able to pinpoint the exact reason, it might be due to bundler installed globally, conflict between rvm and asdf, config for overmind, yarn or npm. But I found the 3 commands that resolve this problem for some time and I usually run them one after another
rails assets:clobber
rake tmp:cache:clear
rake assets:precompile