Javascript and local .html files

[zobo]

Greetings!

I'm using an "out-of-the-box" Kobo Aura H20.
I'm hoping to use it as a one-stop reference tool - the ability to read pdfs, access tiffs, use a browser in the rain, etc is very handy and not economically available in other hardware.
BUT...
I wanted a scientific calculator. I knocked one up in Javascript, and although it works well enough when I use the Kobo browser to access the calculator "on-line" on a remote server, the javascript is not active when I load the calculator.html file into the Library and view it. The buttons show, but do nothing. Some experimentation showed it's not my bad js, but that the reader ignores js.
Q1) Is there a way to make the reader parse and act on js code?

I tried to use the browser to walk the local directory tree by entering

file:///

in the address bar - but that fails to load anything.

Q2) Can the kobo browser access local files?
Q2a) If so, how, and what syntax?

Thanks for your time...

zobo

[eschwartz]

I know the Kindle browser does not make local files available at all (security) and I assume Kobo does the same.

We (Kindle dev corner) got around that with alternative hacked browsers, but I don't believe anyone has done that on the Kobo.



I suggest you run a local webserver, e.g. via Kobo WebPortal / Notes / ServiceMenu

[davidfor]

Originally Posted by zobo

Greetings!

I'm using an "out-of-the-box" Kobo Aura H20.
I'm hoping to use it as a one-stop reference tool - the ability to read pdfs, access tiffs, use a browser in the rain, etc is very handy and not economically available in other hardware.
BUT...
I wanted a scientific calculator. I knocked one up in Javascript, and although it works well enough when I use the Kobo browser to access the calculator "on-line" on a remote server, the javascript is not active when I load the calculator.html file into the Library and view it. The buttons show, but do nothing. Some experimentation showed it's not my bad js, but that the reader ignores js.
Q1) Is there a way to make the reader parse and act on js code?

That is to be expected as the Javascript is not supported in ePub2.

I tried to use the browser to walk the local directory tree by entering

file:///

in the address bar - but that fails to load anything.

Q2) Can the kobo browser access local files?
Q2a) If so, how, and what syntax?

The root of the accessible local file system should be: /mnt/onboard. I have not idea whether the browser can acces these, but I would expect it can.

[zobo]

davidfor suggested:

"The root of the accessible local file system should be: /mnt/onboard. I have not idea whether the browser can acces these, but I would expect it can. "

Just in case others stumble this way ... the browser is unable to access the local file system with a "file:///" prefaced URL.

Looks like the idea is not going anywhere unless one has access to a server (including one installed locally). A pity - one can do a lot with JScript.

[eschwartz]

Originally Posted by zobo

davidfor suggested:

"The root of the accessible local file system should be: /mnt/onboard. I have not idea whether the browser can acces these, but I would expect it can. "

Just in case others stumble this way ... the browser is unable to access the local file system with a "file:///" prefaced URL.

As I thought.

Looks like the idea is not going anywhere unless one has access to a server (including one installed locally). A pity - one can do a lot with JScript.

Did you try frostschutz's "Kobo WebPortal"?

[pipcat]

Originally Posted by zobo

Just in case others stumble this way ... the browser is unable to access the local file system with a "file:///" prefaced URL.

The browser is unable to browse local files but is able to open local files. I used it to view logs of autopatch, for example.
Ok: file:///mnt/onboard/.khd-autopatch/logs/2016-06-22.log
Not ok: file:///mnt/onboard/.khd-autopatch/logs/

It's useful when we have some script that puts info in plain text because we can see it from Kobo device without connecting to a computer ;-)