In the c#ASP MVC5, the JS file is arranged in an arbitrary folder and used in the cshtml file.

Suppose you have the following folder configuration:

Any folder name 1
　<
　任意 Any folder name 2
　　<
　　任意 Any folder name 3
　　　<
　　　コント Controller name
　　　　<
　　　　InIndex.cshtml
　　　　<
　　　　In Index.js

By creating a RazorViewEngine in Application_Start on Global.asax.cs and registering the Index.cshtml location with the RazorViewEngine, we were able to view any location.
I would like to use Index.js from Index.cshtml in the above folder configuration example.
In Index.cshtml @section header

<script src="Index.js" type="text/javascript"></script>

I would like to know how to successfully deliver the external javascript file to the browser by describing
Thank you.