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Include javascript file inside javascript file?

Hello,

I want to include a javascript file in a javascript file.

include('filename.js'); is not working

What is the right code.

Thanks Jean

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includ(the parentfile); – zod Oct 21 '10 at 20:12
@zod is it includ or include, either way not working – X10nD Oct 21 '10 at 20:13
1  
there is no single line include statement in JS – Pekka 웃 Oct 21 '10 at 20:23

marked as duplicate by KennyTM, delnan, JohnFx, Quentin, Graviton Oct 22 '10 at 1:12

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

4 Answers

up vote 2 down vote accepted 
    function includeJS(incFile)
{
  document.write('<script type="text/javascript" src="'
    + incFile+ '"></scr' + 'ipt>'); 
}
</script>

Then include a second JavaScript file by calling:

includeJS('filename.js');
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note that the call will return before the javascript file is loaded – Frank Schwieterman Oct 21 '10 at 20:14
This code will be placed in a js file not html or php, will it work out? – X10nD Oct 21 '10 at 20:15
yes. it is specifically javascript in implementation – FatherStorm Oct 21 '10 at 20:16
Now with attribution: A. B. Cryer. – Eric Towers Oct 21 '10 at 20:17
1  
Don't use string concatenation to avoid </script> ending an inline script, <\/script> is much more readable (and marginally faster). – Quentin Oct 21 '10 at 20:19
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up vote 5 down vote 
<script language="javascript" src="first.js"></script> 
<script language="javascript" src="second.js"></script>

You can access the variables from first in second

There is no need to include one js file into another. Javascripts are globalised one. You can include both the files in the HTML/JSP page.

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Unless for some reason, you want th JS to parse what the include file will be... not that likely, but does have application if you want to add some functionality to a page after the initial load... – FatherStorm Oct 21 '10 at 20:18
may be .but can you point out a real time situation ?. i saw that cryer.co.uk , but i didnt try. exceptional cases are always there :) – zod Oct 21 '10 at 20:23
Here's a case. I have an ASP page which dynamically determines, based on a database record, if it should load a js file. Which file is also a result of the database record. However, the code is designed to load only 1 js file. If that file has a dependency then I have to load it from javascript. – Sailing Judo Mar 14 at 18:27
up vote 1 down vote

If you do the document.write method bear in mind that the code within the file will not be guaranteed to be loaded once document.write returns.

You may want to have some type of callback mechanism when the included file has loaded. That is, register a callback before document.write, and at the very end of your javascript file make a call to the callback function.

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up vote 0 down vote

use document.write in first Javascript function..

document.write('<scr'+'ipt type="text/javascript" src="filename.js" ></scr'+'ipt>');
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Why the downvotes? There are caveats, but the upvoted solution employs the same technique. – Pekka 웃 Oct 21 '10 at 20:23
@Pekka, thanks for it. I know there are caveats but I think people should leave a comment why they are down voting an answer. After all that's how you learn from your mistakes.. – Teja Kantamneni Oct 21 '10 at 20:26

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