Okay, yes, thank you for clarifying! I think the opening line of
Wikipedia's CORS page [1] is a little misleading.

So I can load the js in my page from a different domain, but I can't use
javascript to grab content / data from another domain -- and that is where
CORS / JSONP would come in. Correct?

The last time I was working around that issue standard practice was for the
js to call a script on your own server, which then went out and grabbed the
data for you.

Thanks,
Anna

[1]
http://en.wikipedia.org/wiki/Cross-origin_resource_sharing#cite_note-mozhacks_cors-1


On Tue, Jan 13, 2015 at 10:02 AM, Jason Bengtson <[log in to unmask]>
wrote:

> You don't need CORS or JSONP for straight javascript (in fact JSONP is
> designed to get past SOP by getting the browser to treat a JSON file as
> regular javascript). You can load js from anywhere on the web, basically.
>
> Best regards,
> *Jason Bengtson, MLIS, MA*
>
> Head of Library Computing and Information Systems
> Assistant Professor, Graduate College
> Department of Health Sciences Library and Information Management
> University of Oklahoma Health Sciences Center
> 405-271-2285, opt. 5
> 405-271-3297 (fax)
> [log in to unmask]
> http://library.ouhsc.edu
> www.jasonbengtson.com
>
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>
> On Tue, Jan 13, 2015 at 8:47 AM, Anna Headley <[log in to unmask]> wrote:
>
> > Thanks for these suggestions! The details of our requirements are still
> > being determined, but I expect it will involve placing the same
> js-powered
> > navbar on multiple sites hosted on different servers with varying degrees
> > of access, from entirely in-house to entirely hosted with some ability to
> > customize. I think plan A will be to pull in js using CORS and/or JSONP.
> >
> > Meanwhile I will resign myself to an eternity of wondering what thread my
> > brain managed to warp onto this topic.
> >
> > Best,
> > Anna
> >
> >
> > On Sat, Jan 10, 2015 at 9:12 PM, Joe Hourcle <
> > [log in to unmask]>
> > wrote:
> >
> > > On Jan 10, 2015, at 8:37 PM, Jason Bengtson wrote:
> > >
> > > > Do you have access to the server-side? Server side scripting
> languages
> > > (and
> > > > the frameworks and CMSes built with them) have provisions for just
> this
> > > > sort of thing. Include statements in PHP and cfinclude tags in
> > > coldfusion,
> > > > for example. Every Content Management System I've used has had a
> > > provision
> > > > to create reusable content that can be added to multiple pages as
> > blocks
> > > or
> > > > via shortcodes. If you can use server-side script I recommend it;
> > that's
> > > > really the cleaner way to do this sort of thing. Another option you
> > could
> > > > use that avoids something like iframes is to create a javascript file
> > > that
> > > > dynamically creates the navbar dynamically in your pages. Just
> include
> > > the
> > > > javascript file in any page you want the toolbar to appear in. That
> > > method
> > > > adds some overhead to your pages, but it's perfectly workable if
> > > > server-side script is out of reach.
> > >
> > >
> > > The javascript trick works pretty well when you have people
> > > mirroring your site via wget (as they won't run the js, and
> > > thus won't try to retrieve all of the images that are used
> > > to make the page pretty every time they run their mirror job.
> > >
> > > You can see it in action at:
> > >
> > >         http://stereo-ssc.nascom.nasa.gov/data/ins_data/
> > >
> > > The drawback is that some browsers have a bit of a flash
> > > when they first hit the page.  It might be possible to
> > > mitigate the problem by having the HTML set the background
> > > to whatever color the background will be changed to, but I
> > > don't quite the flexibility to do that in my case, due to
> > > how the page is being generated.
> > >
> > > -Joe
> > >
> > > ps.  It's been years since I've done ColdFusion, but I
> > > remember there being a file that you could set, that would
> > > automatically getting inserted into every page in that
> > > directory, or in sub-directories.  I want to say it was
> > > often used for authentication and such, but it might be
> > > possible to use for this.  If nothing else, you could load
> > > header into a variable, and have the pages just print the
> > > variable in the right location.
> > >
> >
>