Re-executing JavaScript files

Question

I asked this sort of question before ( Application fails to dynamically _re_load JavaScript files ) but I couldn't quite resolve the problem (if it has any solution), so I will put this in another fashion, a simpler one:

Can one unload a file from the browser's memory for posterior reloading?
(Removing the tag is not enough apparently.)

Or more relevant, if a reinsert the tag after removing it, is that code rerun (apparently not)?

How can accomplish the latter?

Thanks in advance.

Alex Akers · Accepted Answer · 2009-11-10 00:30:15Z

1

You could generate a random number and then attach it to the end of the filename like this: .../script.js?r=0.25300762383267283. Then the browser would think it's a new file and not reference it from the cache.

answered Nov 10, 2009 at 0:30

Alex Akers

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Leonardo Del Gesso Over a year ago

I think that helped somehow. Noticed something though: stackoverflow.com/questions/1704979/re-insertion-of-script-tags The code seems to be rerun nevertheless, so mission accomplished and I guess some of the problems I had were not because of this but DOM related issues which I will check out now. Thanks Alexsander.

Pekka · Accepted Answer · 2009-11-10 00:26:12Z

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I don't think it is possible to unload a script file. As to the re-run issue, you could try giving each instance you call a JS file a varying GET parameter (e.g. the current timestamp). That might / should cause the browser to re-execute the file.

What are you trying to achieve? There may be smarter ways than re-loading a script file.

answered Nov 10, 2009 at 0:26

Pekka

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4 Comments

Leonardo Del Gesso Over a year ago

The given link shows a given use case for what I am trying to do :)

Pekka Over a year ago

?? I don't understand. Does that help you or not? And why do you open a 2nd identical question? stackoverflow.com/questions/1704979/re-insertion-of-script-tags

Leonardo Del Gesso Over a year ago

@Pekka Gaiser: How are they duplicated? They are related, but not the same question.

Leonardo Del Gesso Over a year ago

@Pekka Gaiser: Thanks :) And your idea is pretty much the same as Alexsander Akers's I might add, so thanks for that too.

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