Question

I have a site running in a few environments on different URLs (i.e. dev.mysite.com, qa.mysite.com, uat.mysite.com, etc).
There is a Greasemonkey script (myGM.user.js) at each of the environments but its version can be different and depending on the environment a different web service needs to be called to get some data.

In my user script, I would like to get the URL from which that user script was originally installed, so I could then extract the host and use it as a prefix for my web service URL.

For example, if my script is installed from
    http://dev.mysite.com/myGM.user.js,
I want to get
    http://dev.mysite.com/myGM.user.js,
extract
    http://dev.mysite.com/
from it and call
    http://dev.mysite.com/myWebService/getData
for data.

What’s the easiest way to accomplish that? Thanks!

Answer 1

I’ve ended up adding an ASPX page (could be PHP or whatever) to the same folder as myGM.user.js. It simply determines the current host (server-side) and outputs it as text.

So if you browsed to
http://dev.mysite.com/getHost.aspx
the response would be
http://dev.mysite.com/
And if you browsed to
http://uat.mysite.com/getHost.aspx
response would be
http://uat.mysite.com/

Then, in my myGM.user.js I’ve added
// @resource rootUrl GetSiteRoot.aspx
This resource directive takes a URL relative to the URL from where the user script is installed from and downloads the response alongside user script itself.

This allows me to call
GM_getResourceText('rootUrl')
in the body of the user script and know exactly where my script was installed from w/o having to make any changes from environment to environment.

P.S. I will, however, submit a feature request for this to be added GM_Info API.