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Re: Web app to local file system.

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Andrew Poulos <ap_prog@hotmail.com> wrote on 11 May 2018 in 
comp.lang.javascript:

> I've been asked to build a web app that will only be used within the 
> company. The app allows users to assemble content (images, video...) 
> into a series of pages.
> 
> Except for the app itself I'm not going to be given additional space on 
> the server nor access to server side coding.
> 
> Using the File api I can track/display content the user selects the 
> first time but when the browser is closed I lose it all.
> 
> Is there a way for a user to nominate a folder on their computer into 
> which the app can store/retrieve content without overly compromising 
> security?
> 
> I note that Mozilla has LocalFileSystem and a File and Directory Entries 
> API but it's not for production use.

Meseems it is rolled out to all modern browsers:

window.localStorage 
    	- stores data with no expiration date

window.sessionStorage 
    	- stores data for one session
    	(data is lost when the browser tab is closed)

<https://www.w3schools.com/html/html5_webstorage.asp>

=============

The Google Chrome I use now 
Version 67.0.3396.40 (Official Build) beta (64-bit)
responds to a test with:

localStorage: limited to 5101 k characters
sessionStorage: limited to 5101 k characters
globalStorage: not supported

<http://dev-test.nemikor.com/web-storage/support-test/>

===============

see also:

<https://developer.mozilla.org/en-US/docs/Web/API/Window/localStorage>

<https://html5demos.com/storage/>

with warning:

<https://html.spec.whatwg.org/multipage/webstorage.html#dom-localstorage>

with possible issues:

<https://caniuse.com/#feat=namevalue-storage>

-- 
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)

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Thread

Web app to local file system. Andrew Poulos <ap_prog@hotmail.com> - 2018-05-11 15:45 +1000
  Re: Web app to local file system. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2018-05-11 09:15 +0200
    Re: Web app to local file system. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2018-05-11 09:44 +0200
  Re: Web app to local file system. Julio Di Egidio <julio@diegidio.name> - 2018-05-11 01:53 -0700
  Re: Web app to local file system. Dr.Kral@nyc.rr.com - 2018-05-11 10:18 -0400
    Re: Web app to local file system. Dr.Kral@nyc.rr.com - 2018-05-11 12:29 -0400
      Re: Web app to local file system. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2018-05-11 21:39 +0200
        Re: Web app to local file system. Dr.Kral@nyc.rr.com - 2018-05-11 17:29 -0400
          Re: Web app to local file system. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2018-05-12 14:38 +0200
  Re: Web app to local file system. Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-05-12 02:42 -0700

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