execute greasymonkey only once per website

[Nico Gerwien]

Hi,

i wrote a small HelloWorld Script with Greasymonkey and did something
like this:
...
alert(jQuery);
alert(jQuery().jquery);

So the problem is Greasemonkey executes my userscript on some sites
more than once. In this case i get the alert messages many times.

I would like to know if there is a way to ensure that a userscript is
only executed once per website. Or maybe prevent the script to execute
on embedded sites.

Greetz.

[Matt Sargent]

Fairly trivial to just keep a list of domains you have visited, and drop
out of the script if you get a match. You could use a GM value or local
storage to contain the list.

[Kwah]

Have you checked whether the page you are loading uses frames or
iframes ('embedded sites')?

If it does, what you see as one page-load may actually be 2 or more
documents loading on the same page. In other words, your script is
most likely running multiple times due to there being more than one
frame on the page that matches your @include and @exclude rules.

Some details are now available on the Greasepot wiki <
http://wiki.greasespot.net/Prevent_Execution_in_Frames > (nb: subject
to change) which gives an example of how to stop your script doing
this (by comparing window.top and window.self).

Regards

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[Nico Gerwien]

<http://wiki.greasespot.net/Prevent_Execution_in_Frames>

Thanks, that was exactly what i am looking for.

On 14 Mai, 16:57, Kwah <kwa...@gmail.com> wrote:
> Have you checked whether the page you are loading uses frames or
> iframes ('embedded sites')?
>
> If it does, what you see as one page-load may actually be 2 or more
> documents loading on the same page. In other words, your script is
> most likely running multiple times due to there being more than one
> frame on the page that matches your @include and @exclude rules.
>
> Some details are now available on the Greasepot wiki <http://wiki.greasespot.net/Prevent_Execution_in_Frames> (nb: subject
> to change) which gives an example of how to stop your script doing
> this (by comparing window.top and window.self).
>
> Regards
>

[emraan]

Thanks a lot :D solved my Problem \m/