Go App中的模板文件读取自身而不是js和CSS文件

Question

I've just starting learning go and I'm noodling around with web apps using the Google app engine. I've worked through the guestbook tutorial, and have now started my own project. The go part compiles just fine, but there's something strange happening when the template tries to render. It's able to render all the HTML, but I've added both CSS and JS, and the template is somehow reading in itself instead of the respective CSS and JS files. It's bizarre. I'm not sure it's a path problem (I would expect a 404).

This is the error I'm getting in the console:

Uncaught SyntaxError: Unexpected token <

And when I view the resource it's picking up for the js file, it's identical to the template. I've placed my js and css relative to the template folder, so I would expect it would find it:

app/
- templates/
- css/
- js/

So my script is called thusly in the template:

<script src="../js/main.js"></script>

How should I be structuring my JS and CSS resources (and later, images, and SASS/LESS)?

Edit

This is what I see in the source for Chrome devtools:

Answer 1

(╯°□°）╯︵ ┻━┻ Ah it was the app.yaml file. I had:

application: bedlington
version: 1
runtime: go
api_version: go1

handlers:
- url: /.*
  script: _go_app

- url: /css
  static_dir: css

- url: /js
  static_dir: js

But that first url handler catches all the things. So instead this solved the problem:

application: bedlington
version: 1
runtime: go
api_version: go1

handlers:
- url: /
  script: _go_app

- url: /css
  static_dir: css

- url: /js
  static_dir: js

Now I don't know how to catch all the urls (or how to properly exclude resource folders), but it solves the initial problem.