Rails 5/6: How to include JS functions with webpacker?

Question

I am trying to update a Rails 3 app to Rails 6 and I have problems with the now default webpacker since my Javascript functions are not accessible.

I get: Refe

Answer 1

Replace the code in your custom java Script file from

function function_name() {// body //}

to

window.function_name = function() {// body //}