MobileRead Forums - View Single Post

salmobytes · 03-03-2023, 11:09 AM

This is a development question.
I'm an experienced developer in other contexts, but entirely new to epub.
I'm writing a Python utility to convert my website to epub3
I am finally getting output epubs that validate with epubcheck.
Error free.

I start with HTML fragments scraped from a website.
make a recursive list of all links on all pages, as a text file in sequential order
Loop through that link list line by line and make calls to python codes using ebookLib,
that make a new epub. (epub3 fwiw)

The epub I get fails with errors if anything like:

loading="lazy" (css)
onClick="bigImage(this)" (javascript)

...remain in the HTML fragments.
I get an epub that does validate if I strip all that stuff first.

Is there a way to configure something in content.opf perhaps, so that js and css stuff would not have to be stripped? The error I get for that stuff is
ERROR(OPF-014): The property 'scripted' should be declared in the OPF file.

How would I declare it?

I don't expect javascript to work inside an epub reader. But it wold be handy if I did not have to strip it out.

Do any epub readers support any subset of javascript in the epub?

03-03-2023, 11:09 AM	#1
salmobytes Junior Member Posts: 2 Karma: 10 Join Date: Apr 2022 Location: ••••••• Device: pixel3xl	javascript in epub This is a development question. I'm an experienced developer in other contexts, but entirely new to epub. I'm writing a Python utility to convert my website to epub3 I am finally getting output epubs that validate with epubcheck. Error free. I start with HTML fragments scraped from a website. make a recursive list of all links on all pages, as a text file in sequential order Loop through that link list line by line and make calls to python codes using ebookLib, that make a new epub. (epub3 fwiw) The epub I get fails with errors if anything like: loading="lazy" (css) onClick="bigImage(this)" (javascript) ...remain in the HTML fragments. I get an epub that does validate if I strip all that stuff first. Is there a way to configure something in content.opf perhaps, so that js and css stuff would not have to be stripped? The error I get for that stuff is ERROR(OPF-014): The property 'scripted' should be declared in the OPF file. How would I declare it? I don't expect javascript to work inside an epub reader. But it wold be handy if I did not have to strip it out. Do any epub readers support any subset of javascript in the epub?