I'd say yes to the investment in jQuery generally - not too difficult to get the basics if you already use javascript, and makes some things a lot easier

It sounds like you are trying to do something not dissimilar to LibX http://libx.org ? (except via bookmarklet rather than as a browser plugin).
Also looking for custom database scrapers it might be worth looking at Zotero translators, as they already exist for many major sources and I guess will be grabbing the DOI where it exists if they can http://www.zotero.org/support/dev/translators

Owen

Owen Stephens
Owen Stephens Consulting
Web: http://www.ostephens.com
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On 17 May 2013, at 05:32, "Fitchett, Deborah" <[log in to unmask]> wrote:

> Kia ora koutou,
> 
> I’m wanting to create a bookmarklet that will let people on a journal article webpage just click the bookmarklet and get a permalink to that article, including our proxy information so it can be accessed off-campus.
> 
> Once I’ve got a DOI (or other permalink, but I’ll cross that bridge later), the rest is easy. The trouble is getting the DOI. The options seem to be:
> 
> 1.       Require the user to locate and manually highlight the DOI on the page. This is very easy to code, not so easy for the user who may not even know what a DOI is let alone how to find it; and some interfaces make it hard to accurately select (I’m looking at you, ScienceDirect).
> 
> 2.       Live in hope of universal CoiNS implementation. I might be waiting a long time.
> 
> 3.       Work out, for each database we use, how to scrape the relevant information from the page. Harder/tedious to code, but makes it easy for the user.
> 
> I’ve been looking around for existing code that something like #3. So far I’ve found:
> 
> ·         CiteULike’s bookmarklet (jQuery at http://www.citeulike.org/bm - afaik it’s all rights reserved)
> 
> ·         AltMetrics’ bookmarklet (jQuery at http://altmetric-bookmarklet.dsci.it/assets/content.js - MIT licensed)
> 
> Can anyone think of anything else I should be looking at for inspiration?
> 
> Also on a more general matter: I have the general level of Javascript that one gets by poking at things and doing small projects and then getting distracted by other things and then coming back some months later for a different small project and having to relearn it all over again. I’ve long had jQuery on my “I guess I’m going to have to learn this someday but, um, today I just wanna stick with what I know” list. So is this the kind of thing where it’s going to be quicker to learn something about jQuery before I get started, or can I just as easily muddle along with my existing limited Javascript? (What really are the pros and cons here?)
> 
> Nāku noa, nā
> 
> Deborah Fitchett
> Digital Access Coordinator
> Library, Teaching and Learning
> 
> p +64 3 423 0358
> e [log in to unmask]<mailto:[log in to unmask]> | w library.lincoln.ac.nz<http://library.lincoln.ac.nz/>
> 
> Lincoln University, Te Whare Wānaka o Aoraki
> New Zealand's specialist land-based university
> 
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