Unit testing javascript (NOT node)

I am scratching my head at this one, I must have missed something really obvious.

I have a .Net ASP MVC Web app, developed with VS2015, in which I have written some library javascript code. I would like to have some simple tests for this javascript code that I can run in my dev environment, on my own machine. I have no IIS server locally. (The server side code is fine, I use NUnit and VSs Testrunner).

I have read about Mocha (and used it back end), QUnit etc - but anything whose installation and use instructions start npm install and talks about running grunt jobs is not what I am after.

Can someone point me in the right direction / educate me?