Rails - Dec 2006 - Best way to detect missing images from javascript ?

Hi

I have a rails app where I need to display images coming from other sites.

Does anyone have an effective solution to detect missing images (ie broken
links) in javascript ?

thanks

Thibaut


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Hi Philip

thanks for your answer. I finally found this which seems to work just fine:

<img src="http://example.com/testimage.gif"
        onerror="this.src = ''error.gif'';">

thanks for the pointer!

Thibaut


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> I have a rails app where I need to display images coming from other sites.
>
> Does anyone have an effective solution to detect missing images (ie broken
> links) in javascript ?
My memory is you can load it up doing something like:

i = new Image;
i.src = "http://.....";

then check for the resulting size if it''s width or height is zero, it 
isn''t there... and I think there''s a loaded() and maybe other
functions as
well...

search for javascript image methods on google and see what comes up...

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