SRC parameter not working in Mozilla when path is included

[wylbur37]

(This is a re-post of something that apparently did not post correctly
the first time, so if there's more than one copy, please ignore the
duplicate).

I normally use Mozilla 1.4 on Windows XP Pro.
As I was developing some test webpages, I discovered that the SRC
parameter doesn't seem to work when a path is used with the filename.

In one example, when I want to run a JavaScript from an external file
(i.e., not inline), I would do the following ...

<SCRIPT LANGUAGE="JavaS cript" SRC="program.js "> </SCRIPT>

If "program.js " were in a different subdirectory than the .htm file
referring to it, the filename would have to be prefixed by the
pathname as follows ...

<SCRIPT LANGUAGE="JavaS cript" SRC="/mydir/program.js"> </SCRIPT>

But when I ran the above from within an .htm file loaded locally into
Mozilla, it did not work. (The result was as if the above code weren't
there). However, when I ran the identical code on Internet Explorer
(v.6), it worked.
In another, even simpler example, the code to put an image on a
webpage is ...

<img src="picture.jp g">

Again, if "picture.jp g were in a different subdirectory than the .htm
file referring to it, the filename would have to be prefixed by the
pathname as follows ...

<img src="/mydir/picture.jpg">

When I ran the above from within an .htm file loaded locally into
Mozilla, it did not work. (The result was as if the above code weren't
there). However, when I ran the identical code on Internet Explorer
(v.6), it worked.
By the way, I tried using backslashes instead of forward slashes. In
both cases, it still worked on Internet Explorer but not on Mozilla.
The SRC parameter seems like a fairly frequently used parameter for
the developers of Mozilla to overlook it. Is this really a bug in
Mozilla or is it just some option/switch in Mozilla that I didn't set
properly?
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[Lasse Reichstein Nielsen]

"Richard Cornford" <Ri*****@litote s.demon.co.uk> writes:

If you look at a file protocol URL on a Windows machine, such as -
file:///C:/mydir/program.js
- you may notice that the "file:" part is separated from the rest of
the URL by three slashes instead of the two that would usually be in
that location. The last of those three slashes represents the root
directory

No. It separates the server from the path. In file URL's the server
can be omitted if it is "localhost" , but the above is equivalent to
the URI
file://localhost/C:/mydir/program.js
The usual rules apply, so this can be separated using the grammar
productions (RFC 2396 section 3):

absoluteURI :: scheme ":" hier_part
hier_part :: net_path
net_path :: "//" authority [abs_path]
abs_path :: "/" path_segments

Here, scheme is "file", authority is the "localhost" server and
path_segments is "C:/mydir/program.js".

There is no initial slash in the path segments, but when the
scheme+server is specified, the path is necessarily absolute.

/L
--
Lasse Reichstein Nielsen - lr*@hotpop.com
DHTML Death Colors: <URL:http://www.infimum.dk/HTML/rasterTriangleD OM.html>
'Faith without judgement merely degrades the spirit divine.'

[Dr John Stockton]

JRS: In article <hd**********@h otpop.com>, seen in
news:comp.lang. javascript, Lasse Reichstein Nielsen <lr*@hotpop.com >
posted at Fri, 2 Jan 2004 19:02:57 :-

function makeMyImg() {
var img = new Image();
img.src = "../images/myImage.png";
return img;
}

The problem is that when that code is called from an HTML page, the path
is taken relative to the HTML file, not the Javascript file. If you have
HTML files in different levels of directories, no relative path will
work for all of them. That makes absolute paths necessary for Javascript
files that are shared between different pages.

When a page is being written, one should know its position on the site.

So surely the function should be along the lines of

function makeMyImg(PartP ath) {
var img = new Image();
img.src = PartPath + "images/myImage.png";
return img;
}

or even have the full name of the image passed as a parameter?

--
© John Stockton, Surrey, UK. ?@merlyn.demon. co.uk Turnpike v4.00 IE 4 ©
<URL:http://jibbering.com/faq/> Jim Ley's FAQ for news:comp.lang. javascript
<URL:http://www.merlyn.demo n.co.uk/js-index.htm> jscr maths, dates, sources.
<URL:http://www.merlyn.demo n.co.uk/> TP/BP/Delphi/jscr/&c, FAQ items, links.

[Thomas 'PointedEars' Lahn]

Lasse Reichstein Nielsen wrote:

The problem is that when that code is called from an HTML page, the path
is taken relative to the HTML file, not the Javascript file. If you have
HTML files in different levels of directories, no relative path will
work for all of them. That makes absolute paths necessary for Javascript
files that are shared between different pages.

It does not. In the linked script file you can retrieve the URL of
the linking document, as for example (from my box of olde things ;-)):

function CalcPaths() { /* Calculates relative image file paths to
absolute ones */
var PathEnd = document.URL.la stIndexOf('\\') ; // Folder path
if (PathEnd == -1)
PathEnd = document.URL.la stIndexOf('/'); // URL
if (PathEnd == -1) { // Extends filename to full path
var prevImgCollapse d = imgCollapsed;
imgCollapsed = document.URL.sl ice(0, PathEnd);
imgCollapsed += "/";
imgCollapsed += prevImgCollapse d;
var prevImgExpanded = imgExpanded;
imgExpanded = document.URL.sl ice(0, PathEnd);
imgExpanded += "/";
imgExpanded += prevImgExpanded ;
}
}
PointedEars

[Michael C.]

On Fri, 2 Jan 2004 06:11:14 -0800 (PST),
wylbur37 <wy************ @yahoo.com> wrote:

(This is a re-post of something that apparently did not post correctly
the first time, so if there's more than one copy, please ignore the
duplicate).

I normally use Mozilla 1.4 on Windows XP Pro.
As I was developing some test webpages, I discovered that the SRC
parameter doesn't seem to work when a path is used with the filename.

In one example, when I want to run a JavaScript from an external file
(i.e., not inline), I would do the following ...

<SCRIPT LANGUAGE="JavaS cript" SRC="program.js "> </SCRIPT>

If "program.js " were in a different subdirectory than the .htm file
referring to it, the filename would have to be prefixed by the
pathname as follows ...

<SCRIPT LANGUAGE="JavaS cript" SRC="/mydir/program.js"> </SCRIPT>

Try

<SCRIPT LANGUAGE="JavaS cript" SRC="file:///mydir/program.js">
</SCRIPT>

or

<SCRIPT LANGUAGE="JavaS cript"
SRC="http://my.server.org/mydir/program.js">
</SCRIPT>

AFAIK, you don't assume a server. Just because it works in IE, doesn't
make it correct. And don't use backslashes, IE might not balk at them,
but if you ever want to view the files in anything but IE, you'll be
disappointed.

HTH,

Michael C.
--
mc******@usol.c om http://mcsuper5.freeshell.org/

If we cease to judge this world, we may find ourselves, very quickly, in
one which is infinitely worse. - Margaret Atwood