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storage library

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  storage library Andrew Poulos <ap_prog@hotmail.com> - 2012-06-19 22:57 +1000
    Re: storage library Scott Sauyet <scott.sauyet@gmail.com> - 2012-06-19 06:11 -0700
      Re: storage library Andrew Poulos <ap_prog@hotmail.com> - 2012-06-20 11:55 +1000
        Re: storage library Scott Sauyet <scott.sauyet@gmail.com> - 2012-06-20 06:51 -0700
    Re: storage library Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2012-06-19 19:21 +0200
      Re: storage library Scott Sauyet <scott.sauyet@gmail.com> - 2012-06-20 07:21 -0700
    Re: storage library Arno Welzel <usenet@arnowelzel.de> - 2012-06-19 19:43 +0200
    Re: storage library "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2012-06-19 13:36 -0700

#14560 — storage library

Could someone please point me to a data storage library that's at least 
halfway decent and doesn't need jquery, YUI...

Andrew Poulos

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#14561

Andrew Poulos wrote:
> Could someone please point me to a data storage library that's at least
> halfway decent and doesn't need jquery, YUI...

Could you explain in a little more detail what you're looking for from
it, and what the barriers are to writing your own?

 -- Scott

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#14582

On 19/06/2012 11:11 PM, Scott Sauyet wrote:
> Andrew Poulos wrote:
>> Could someone please point me to a data storage library that's at least
>> halfway decent and doesn't need jquery, YUI...
>
> Could you explain in a little more detail what you're looking for from
> it, and what the barriers are to writing your own?

I've got an elearning course which "holds" a growing bunch of data as 
users move through it. Data, such as questions attempted, number of 
attempts, duration in question, user's response... Some data are 
objects, some strings, some numbers...

It all works fine until a user decides to refresh the page and all the 
data is lost.

I was going to use cookies to be cross/all browser but I wanted a 
simpler more robust way of saving/accessing the data.

I have time pressures so I don't want to work my way through any issues 
with localStorage, globalStorage, or userData. If someone else has 
suffered through it to create a library to share, then I'm happy to use it.

Andrew Poulos

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#14588

Andrew Poulos wrote:
> Scott Sauyet wrote:
>> Andrew Poulos wrote:
>>> Could someone please point me to a data storage library that's at least
>>> halfway decent and doesn't need jquery, YUI...
>
>> Could you explain in a little more detail what you're looking for from
>> it, and what the barriers are to writing your own?
>
> I've got an elearning course which "holds" a growing bunch of data as
> users move through it. Data, such as questions attempted, number of
> attempts, duration in question, user's response... Some data are
> objects, some strings, some numbers...
>
> It all works fine until a user decides to refresh the page and all the
> data is lost.

localStorage definitely sounds like the way to go.  Presumably you
want a fall-back to globalStorage and to userData.  These are not hard
to write, but look at the some of the implementations presented in
Arno's (somewhat snarky) response or the one Michael sent.  You should
be able to see that some of them are quite small.  It just doesn't
take that much to write these small wrappers around a few different
existing APIs and provide a common interface.


> I was going to use cookies to be cross/all browser but I wanted a
> simpler more robust way of saving/accessing the data.
>
> I have time pressures so I don't want to work my way through any issues
> with localStorage, globalStorage, or userData. If someone else has
> suffered through it to create a library to share, then I'm happy to use it.


I can't speak to the quality of any of the public tools.  I've
rewritten this twice for different jobs because it was easy enough
that I hadn't bothered storing any version of it in my personal
library of tricky things to remember.  But each of those jobs was for
Intranet applications where the universe of browsers under test was
relatively small.  For my own sanity, I ensured it worked in a
somewhat larger universe, but I did not try to capture everything.  If
you have a larger audience, then look carefully at these libraries and
see what they claim for browser support, and note especially how much
data you can store in each browser.  If you're going to store more
than 128K, then some implementation have issues in some browsers, I
believe.

Then make sure you test this yourself in any browser you think might
have a realistic chance of being used.  Take their claims with a very
large grain of salt.

But the source code should show you the general techniques you might
want to use if you roll your own.  You might find it easier in the end
to have your own, as it simply is not that difficult.

Good luck,

  -- Scott

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#14569

Andrew Poulos wrote:

> Could someone please point me to a data storage library that's at least
> halfway decent and doesn't need jquery, YUI...

Probably yes.


PointedEars
-- 
var bugRiddenCrashPronePieceOfJunk = (
    navigator.userAgent.indexOf('MSIE 5') != -1
    && navigator.userAgent.indexOf('Mac') != -1
)  // Plone, register_function.js:16

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#14589

Thomas 'PointedEars' Lahn wrote:
> Andrew Poulos wrote:
>> Could someone please point me to a data storage library that's at least
                 ^^^^^^
>> halfway decent and doesn't need jquery, YUI...
>
> Probably yes.

I've never responded before to the pointers to ESR's Smart Questions
FAQ, or to people who respond to "Can someone explain..." with "Yes",
as I think those responses are a part of the initiation that USENET
users need to go through.

But this one seems inappropriate.  Thomas, I believe you're not a
native speaker of English, but you've made it clear here that your
grasp of the language, even its subtleties,  is quite strong.
However, I'm wondering if you misunderstood here.  By including
"please" as Andrew did, he changed the meaning in such a way that
"Yes" is not really an appropriate answer.  "Could you please..." is a
somewhat more polite synonym for "Would you..."

</grammatical-lesson>

  -- Scott

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#14570

Andrew Poulos, 19.06.2012 14:57:

> Could someone please point me to a data storage library that's at least
> halfway decent and doesn't need jquery, YUI...

<http://lmgtfy.com/?q=javascript+data+storage+library>


-- 
Arno Welzel
http://arnowelzel.de
http://de-rec-fahrrad.de

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#14575

On Tuesday, June 19, 2012 7:57:44 AM UTC-5, Andrew Poulos wrote:
> Could someone please point me to a data storage library that's at least 
> halfway decent and doesn't need jquery, YUI...

Perhaps this:

<https://github.com/wojodesign/local-storage-js>

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