Dynamic include?

[DanielEKFA]

Hey hey hey :)

I'd like to do a .js include each X seconds, to update an array (the .js is
really a .php file which generates the javascript dynamically).

Just like <script language="JavaScript" src="..., but in something like a
function call, e.g. "include('mydynamicscript.js');".

Can be done? Yes? No?

TIA,
Daniel :)
--
Why do cats jump out of windows? Because there's love out there!

[nj]

Yep, it's possible.

One way to do this is by giving a script tag an ID, and then use a
timeout to reload the script by altering, or setting the SRC attribute
of the script tag.

Something like this (completely ad hoc and untested) might do the
trick:

-------

<script language="javascript" src="somejscode.php"
id="somejscode"></script>
<script language="javascript">

function refreshScript() {
// if this doesn't work (due to browser caching for instance), try
adding a random querystring parameter to force a refresh
document.getElementById("somejscode").src = "somejscode.php";
}

setInterval ("refreshScript();", 5000); // refresh in 5 seconds

</script>

-------
hope this helps,
J.

[DanielEKFA]

nj wrote:

Yep, it's possible.

One way to do this is by giving a script tag an ID, and then use a
timeout to reload the script by altering, or setting the SRC attribute
of the script tag.

Something like this (completely ad hoc and untested) might do the
trick:

-------

<script language="javascript" src="somejscode.php"
id="somejscode"></script>
<script language="javascript">

function refreshScript() {
// if this doesn't work (due to browser caching for instance), try
adding a random querystring parameter to force a refresh
document.getElementById("somejscode").src = "somejscode.php";
}

setInterval ("refreshScript();", 5000); // refresh in 5 seconds

</script>

-------
hope this helps,
J.

Hi NJ :)

Thanks for the reply. Unfortunately, this doesn't work, with our without
adding a bogus variable to the URL (at least not in Firefox). In the
meantime I was fiddling around with loading a helper.html file in an
iframe, and letting the helper page update the script (actually the script
creates an array), then call back to the parent page with the updated
array. This should work, but firefox doesn't really like it
("document.getElementById('helper').location has no properties" or
"document.frames has no properties")... Gonna kick on that for a bit...

Cheers,
Daniel :)

--
Why do cats jump out of windows? Because there's love out there!

[DanielEKFA]

DanielEKFA wrote:

array. This should work, but firefox doesn't really like it
("document.getElementById('helper').location has no properties" or
"document.frames has no properties")... Gonna kick on that for a bit...

Of course I was just forgetful, it's .src, not .location.href :) Works fine
now.
--
Why do cats jump out of windows? Because there's love out there!

[Thomas 'PointedEars' Lahn]

nj wrote:

Yep, it's possible.

One way to do this is by giving a script tag an ID, and then use a timeout
to reload the script by altering, or setting the SRC attribute of the
script tag.
You mean the `script' ([X]HTML) element which consists of a start tag
(`<script ...>'), content that may be empty and an end tag (`</script>').
Something like this (completely ad hoc and untested) might do the
trick:

-------

<script language="javascript" src="somejscode.php"
id="somejscode"></script>

The `script' element does not have an `id' attribute in HTML, and
since the `type' attribute is missing here this is not even HTML:
The above is not supposed to work.
PointedEars
--
Immerhin weiß ich, daß die durchschnittliche Verkaufsperson kein Abitur
erlitten hat, somit der Sprachwitz bisweilen nicht durch entsprechende
Sachkenntnis gedämpft ist.
-- Martin Gerdes in desd <qr********************************@4ax.com>

[Randy Webb]

Thomas 'PointedEars' Lahn wrote in a message on 07 May 2005 in reply to
a message dated 21 April 2005 and for some reason felt it appropriate to
reply to a message that was dead and gone for over two weeks and babbled
incoherently as follows:

nj wrote:

Yep, it's possible.

One way to do this is by giving a script tag an ID, and then use a timeout
to reload the script by altering, or setting the SRC attribute of the
script tag.

You mean the `script' ([X]HTML) element which consists of a start tag
(`<script ...>'), content that may be empty and an end tag (`</script>').

Who said anything about [X]HTML?

Something like this (completely ad hoc and untested) might do the
trick:

-------

<script language="javascript" src="somejscode.php"
id="somejscode"></script>

The `script' element does not have an `id' attribute in HTML, and
since the `type' attribute is missing here this is not even HTML:

Again, who said anything about [X]HTML? For all you know it could be an
..hta application. Besides, you missed the very important point that
changing the source of a script tag only works in IE. For other
browsers/UA's you have to implement a different strategy.
The above is not supposed to work.

That depends, directly, on your definition of "works". Perhaps if you
bothered to learn what reality is in the world of browsers/UA's you
would realize it does indeed "work" in certain scenarios.

--
Randy
comp.lang.javascript FAQ - http://jibbering.com/faq & newsgroup weekly