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--You cannot load jquery from a web url. Either dont use it or bundle it in the actual epub file.--
OK missed that part, I've put a local copy of jquery in the archive. The relevant portions of the EPUB archive now look like this, but I still get the same result: the javascript executes in the calibre Editor but not in the calibre Reader.
From start.xhtml
<head>
<title>Demo</title>
<script src="META-INF/jquery-3.5.1.min.js">
</script>
...
</head>
From metadata.opf:
<manifest>
<item href="start.xhtml" id="start" media-type="application/xhtml+xml" properties="scripted"/>
<item href="META-INF/jquery-3.5.1.min.js"
media-type="text/javascript"
properties="scripted"/>
<item href="toc.ncx" id="ncx" media-type="application/x-dtbncx+xml"/>
</manifest>
Is there something wrong with the above code? Does the js library have to also be added to the spine? Is the path name correct? (The META-INF path was the path name that showed up in the prompt when I entered the source attribute)?
I am running calibre on Big Sur. Is it possible that the reader is using features that are triggering Big Sur's security infrastructure whereas the editor is not?
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