Replacing ModX document with Javascript

I have been away on other consulting and returning to ModX, still a beginner. I feel I should know how to know this instinctively but neither that nor searching forums has helped:

I would like to completely replace a (normal) ModX document with an executable Javascript/HTML (conformant) file that contains its own inline style.

Here is what I tried:

1. Using the file as a template with a blank document.

2. Using a blank template and pouring the file into the document itself.

I was able to execute the page with wonderfully weird results (displayed parts of the executable page).

Should I be including this as a file within some sort of ’normal’ ModX template? Or including it as a snippet?

.... I can find lots of help for doing php stuff but not so much for Javascript.

Do a search on the word:

includefile

Should find what you need...