Touch No external JS?

rtmyers · 10-16-2012, 09:49 AM

I'm developing books with embedded JS and trying to get them to work on the Kobo Touch. I'll be darned if it doesn't completely ignore external JavaScript (<script src="...">), while the same JS pasted directly on the page works just fine. Or maybe I'm missing something...anyone?

Now I just have to figure out how to detect touch events and stop them from propagating--the same code that does all that just fine on iBooks appears to do nothing at all on the Touch.

ottdmk · 10-16-2012, 12:50 PM

You should check out the developer's forum: https://www.mobileread.com/forums/forumdisplay.php?f=247

rtmyers · 10-16-2012, 12:53 PM

Thanks, I did take a look at the Developer's forum, but it seemed to more about hacking and programming the device, whereas I am trying to build smart books to read on it...

rtmyers · 10-16-2012, 02:35 PM

Now I am trying to handle touch events from Javascript within books to be read on the Kobo Touch. I put a simple handler on the body element:

Code:

<body ontouchstart="alert('touched')">

but this event is never triggered when I touch the page. Any thoughts?

I tried querying navigator.epubReadingSystem.hasFeature("touch-events") (see http://code.google.com/p/epub-revisi...bReadingSystem), but it turns out navigator.epubReadingSystem is not defined on the Kobo Touch, even though the "spec" says

Returns an object that represents the current reading system. Every reading system that supports scripting in any fashion MUST provide this object.

PeterT · 10-16-2012, 05:03 PM

Quote:

Originally Posted by rtmyers

Returns an object that represents the current reading system. Every reading system that supports scripting in any fashion MUST provide this object.

That might well be the clue.... Every reading system that supports scripting in any fashion MUST provide this object

So no support for scripting would mean NO need to provide the object

Xennex1170 · 10-16-2012, 09:38 PM

Quote:

Originally Posted by PeterT

That might well be the clue.... Every reading system that supports scripting in any fashion MUST provide this object

So no support for scripting would mean NO need to provide the object

I'm actually curious now.. Would such ebooks still be compatible with current epub ereaders out now? Or would it only really be supported in 'higher-end' devices like smartphones and tablets?

Is scripting an allowed option of the epub format? Would it still be an .epub file in other words.

rtmyers · 10-16-2012, 10:27 PM

No, the Kobo Touch does support scripting. It just doesn't, as far as I can tell, support scripts in external files.

Quote:

Originally Posted by Xennex1170

I'm actually curious now.. Would such ebooks still be compatible with current epub ereaders out now? Or would it only really be supported in 'higher-end' devices like smartphones and tablets?

Is scripting an allowed option of the epub format? Would it still be an .epub file in other words.

To be precise, scripted ebooks are compatible with whatever devices offer scripting support

, which include some but not all readers advertising themselves as supporting epub3, including iBooks, Readium, VitalSource Reader, Calibre if you call that a reader, etc. Whether or not it's supported on a smartphone or tablet is not a question of whether it's a "higher-end" device, but whether the particular reader you're using on that device supports it.

Scripting is an optional feature of epub3 implementations. Books using scripting are very much still epubs.

PeterT · 10-16-2012, 11:24 PM

It might support scripting within Kobo format ePubs (kEpubs) but I seriously doubt it supports them within ePubs (ePubs).

You can to a limited way force the Kobo to open a book in the Kobo format engine but this is not supported (and frowned on) by Kobo.

10-16-2012, 09:49 AM	#1
rtmyers Member Posts: 24 Karma: 10 Join Date: Aug 2012 Device: iPad	No external JS? I'm developing books with embedded JS and trying to get them to work on the Kobo Touch. I'll be darned if it doesn't completely ignore external JavaScript (<script src="...">), while the same JS pasted directly on the page works just fine. Or maybe I'm missing something...anyone? Now I just have to figure out how to detect touch events and stop them from propagating--the same code that does all that just fine on iBooks appears to do nothing at all on the Touch.

10-16-2012, 02:35 PM	#4
rtmyers Member Posts: 24 Karma: 10 Join Date: Aug 2012 Device: iPad	Now I am trying to handle touch events from Javascript within books to be read on the Kobo Touch. I put a simple handler on the body element: Code: <body ontouchstart="alert('touched')"> but this event is never triggered when I touch the page. Any thoughts? I tried querying navigator.epubReadingSystem.hasFeature("touch-events") (see http://code.google.com/p/epub-revisi...bReadingSystem), but it turns out navigator.epubReadingSystem is not defined on the Kobo Touch, even though the "spec" says Returns an object that represents the current reading system. Every reading system that supports scripting in any fashion MUST provide this object.

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10-16-2012, 12:50 PM	#2
ottdmk Wizard Posts: 1,217 Karma: 3804496 Join Date: Feb 2012 Location: Ottawa, Ontario, Canada Device: Kobo Libra 2, Lenovo Tab M10 FHD Plus, Lenovo Tab M9	You should check out the developer's forum: https://www.mobileread.com/forums/forumdisplay.php?f=247

10-16-2012, 12:53 PM	#3
rtmyers Member Posts: 24 Karma: 10 Join Date: Aug 2012 Device: iPad	Thanks, I did take a look at the Developer's forum, but it seemed to more about hacking and programming the device, whereas I am trying to build smart books to read on it...

10-16-2012, 11:24 PM	#8
PeterT Grand Sorcerer Posts: 13,297 Karma: 78876004 Join Date: Nov 2007 Location: Toronto Device: Libra H2O, Libra Colour	It might support scripting within Kobo format ePubs (kEpubs) but I seriously doubt it supports them within ePubs (ePubs). You can to a limited way force the Kobo to open a book in the Kobo format engine but this is not supported (and frowned on) by Kobo.