Dynamic include filenames

[Thundor]

Here is what I am trying to do.

I dynamically build on the fly a file name along with a query string, say for example "http://www.domain.com/filename.js?var1=3&var2=6". I now need to include that JavaScript file (it resides on a remote computer because it has to interact with a database) in the code.

With ASP or PHP I can build the string server side and just use a "<script src=" to include the file. But I can't think of a way in JavaScript to include it in a similar manner.

The only solution I've even seen anyone speak of is including JavaScript in image files, but there is very little information on that (that I can find)

If anyone has any suggestions on how this might be accomplished, or any page they can send me to with more information, it would be greatly appreciated.

[beetle]

Well, I'm not sure from your post how you want to determine the filename, but you can write <script> lines to the page with javascript, but it requires a little trick<script>
document.write('<scr'+'ipt src="filename.js"></scr'+'ipt>');
</script> See the breaks in the 'script'? That's the trick ;)

[Thundor]

I tried your suggestion, but that code that the javascript outputs doesn't execute.

Here is the code I tried based on your suggestion.

document.write("<scr'+'ipt type=\"text/javascript\" src=\""+vFilename+"\"></scr'+'ipt>")

where vFilename is the filename I wanted included.

I also tried a Hello World example by trying to ouput a simple peice of text that way, and the code shows up, but never executes.

document.write("<script type=\"text/javascript\">document.write("Hello World");</scr'+'ipt>")

[beetle]

This worked just fine for me<script>
document.write('<scr'+'ipt>alert("hello world");</scr'+'ipt>');
</script> You didn't split the opening script tag.

also, the problem with your first example is your concatenation is all screwy. See my post on this page (http://www.codingforums.com/showthread.php?s=&threadid=4307&highlight=concatenation+rules) about concatenation rules. Here's the fixdocument.write('<scr'+'ipt type="text/javascript" src="'+vFilename+'"></scr'+'ipt>');

[Thundor]

Heh, works now. My newbieness is showing, the problem was in the quotes. I used double quotes where I should have had single quotes around the +vFilename+

document.write('<scr'+'ipt src=\"'+vFilename+'\"></scr'+'ipt>');

Thanks for all your help :D

[beetle]

You're welcome. but I should note that in your post above, it is not necessary to escape the double-quotes in that line. Since you are using single-quotes for your string containers, double-quotes can be used regularly within the string.

If you haven't yet, you should visit the post I linked to and read my 'rules' :D

[beetle]

Oh, and I also feel obligated to note that this can be done with the DOM as well, and even turned into a function and changed dynamically while at the page...var head = document.getElementsByTagName('head').item(0);
script = document.createElement('script');
script.src = 'filename.js';
script.type = 'text/javascript';
head.appendChild(script);