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From: deostroll on 18 Mar 2010 00:43
hi,

Suppose I have a script tag somewhere in my page as follows:

<script type="text/javascript" src="myscripts.js"></script>

I would want to get the exact uri of the js page (something like
http://mysite.com/myscripts.js). Or at least get the name of the js
file (myscripts.js). Is this possible?

--deostroll
From: Thomas 'PointedEars' Lahn on 18 Mar 2010 03:47
deostroll wrote:

> Suppose I have a script tag somewhere in my page as follows:
>
> <script type="text/javascript" src="myscripts.js"></script>

That is a SCRIPT/script _element_, consisting of _start_ and _end_ tag.

<http://www.w3.org/TR/html401/intro/sgmltut.html#h-3.2>

> I would want to get the exact uri of the js page

There is no such thing as a "js page". (There are no "Web pages" either,
except in paged presentation such as a printout. The former is a _script_
written in an _ECMAScript-based/-conforming_ programming language
[commonly: JavaScript or JScript]; the latter is an _[X]HTML_ _document_.)

> (something like http://mysite.com/myscripts.js). Or at least get the name
> of the js file (myscripts.js). Is this possible?

Very likely nowadays. Yes, but not on the client side; the client can only
provide information about the URI of the resource.

I believe these questions have been answered before.

<http://jibbering.com/faq/#posting> pp.


PointedEars
--
realism: HTML 4.01 Strict
evangelism: XHTML 1.0 Strict
madness: XHTML 1.1 as application/xhtml+xml
-- Bjoern Hoehrmann
From: Scott Sauyet on 18 Mar 2010 11:28
On Mar 18, 12:43 am, deostroll <deostr...(a)gmail.com> wrote:
> Suppose I have a script tag somewhere in my page as follows:
>
> <script type="text/javascript" src="myscripts.js"></script>
>
> I would want to get the exact uri of the js page (something like
> http://mysite.com/myscripts.js). Or at least get the name of the js
> file (myscripts.js). Is this possible?

Yes you can get the URI, but there are some problems with differences
between IE and most other browsers.

There are several questions, though. First, where are you doing it
from? Are you trying to find the URI from within myscripts.js, or
from within another script? Second, if it's the latter, how do you
identify among the possibly numerous SCRIPT elements the one you
want? Can you give it an id?

In general, though,

var scripts = document.getElementsByTagName("SCRIPT");

will give you a list of the script tags. Then you have to find the
correct one. If you are doing this code within the linked script, you
*might* be able to use scripts[scripts.length - 1] to refer to the
current script element; I haven't tested this widely, though. I
believe that although the scripts can be downloaded in any order, they
are supposed to be evaluated in document order.

Once you have your script element, you can check it's "src"
attribute. Here's where IE often differs from the other browsers; it
might well return "myscript.js", while the others will likely return
"http://mysite.com/myscript.js". You will have to resolve this by
combining the short form with the document.location.href or -- if a
BASE element is present -- the href of the BASE element. This is not
trivial to do, but it's not too hard either. I'm sure there are
examples of this to be found on the Web.

Good luck,

-- Scott
From: Scott Sauyet on 18 Mar 2010 11:29
On Scott Sauyet wrote:
> Once you have your script element, you can check it's "src"

s/it's/its

-- Scott
From: Richard Cornford on 18 Mar 2010 12:09
On Mar 18, 3:28 pm, Scott Sauyet wrote:
<snip>
> ... ? Second, if it's the latter, how do you
> identify among the possibly numerous SCRIPT elements
> the one you want? Can you give it an id?
<snip>

Since HTML SCRIPT elements are not specified as supporting an ID
attribute, giving one such an attribute may not be that useful an
action. There is certainly no reason for expecting it to be useful
beyond the observation that in some environments the element does
support that attribute.

Richard.
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