Can I write to file in JavaScript?

[.]

Yes, now you can with LocaWapp (and async Ajax):
http://daviderognoni.blogspot.com/?locawapp


[JavaScript]

jsFileWrite("testJsFile.txt","This is a test.");

alert(jsFileRead("testJsFile.txt"));

 

[Ivan Marsh]

Yes, now you can with LocaWapp (and async Ajax):
http://daviderognoni.blogspot.com/?locawapp

Which isn't javascript... so, therefore no, you can't.

 

[Laurent Bugnion]

Hi,

Which isn't javascript... so, therefore no, you can't.

Actually, with appropriate permissions, you can. I can publish the code
for Netscape 4.*, Mozilla (Netscape 6, 7, Firefox) and for IE if needed.

HTH,
Laurent

 

[Randy Webb]

Laurent Bugnion said the following on 6/16/2006 6:00 PM:

Hi,



Actually, with appropriate permissions, you can. I can publish the code
for Netscape 4.*, Mozilla (Netscape 6, 7, Firefox) and for IE if needed.

Does your code also document the pitfalls with trying to write to the
File System from an Internet page?

 

[Laurent Bugnion]

Hi,

Laurent Bugnion said the following on 6/16/2006 6:00 PM:



Does your code also document the pitfalls with trying to write to the
File System from an Internet page?

It's not a demo or a tutorial, only code that I use under certain
circumstances (i.e. I use it only in pages running in the file:
protocol). It just bugged me to read that JavaScript cannot write to
files, which is not correct.

HTH,
Laurent

 

[.]

Hi,
"... to write to the File System from an Internet page?"

Yes, because I want:
LWA - LocaWapp - localhost web applications

Do you like new logo?
http://daviderognoni.blogspot.com/?locawapp


Laurent Bugnion ha scritto:

 

[Aaron Gray]

Actually, with appropriate permissions, you can. I can publish the code

for Netscape 4.*, Mozilla (Netscape 6, 7, Firefox) and for IE if needed.

Okay I am interested in a copy. Can you send me a link ?

Aaron

 

[Laurent Bugnion]

Hi,

Okay I am interested in a copy. Can you send me a link ?

Aaron

I posted a demo on my website
http://www.galasoft-lb.ch/myjavascript/CExplorer

All comments welcomed.

Greetings,
Laurent

 

[Laurent Bugnion]

Hi Randy,

Does your code also document the pitfalls with trying to write to the
File System from an Internet page?

I posted a demo on my website
http://www.galasoft-lb.ch/myjavascript/CExplorer

I'd be interested to hear what you think of it in order to improve the
description of it.

Note: It's basically just a proof of concept.

HTH,
Laurent

 

[Randy Webb]

Laurent Bugnion said the following on 6/19/2006 7:15 AM:

Hi Randy,



I posted a demo on my website
http://www.galasoft-lb.ch/myjavascript/CExplorer

I'd be interested to hear what you think of it in order to improve the
description of it.

Even with a File>Save As and executing it locally IE6 throws an
automation error. I didn't look to find it yet, but I will try later.

Note: It's basically just a proof of concept.

The concept is solid, its implementation is what is difficult with the
state of security settings.

The problem isn't JS' lack of ability to save files locally, it is the
lack of privileges that prevents it from being reliable on an internet
website.

 

[Laurent Bugnion]

Hi,

Even with a File>Save As and executing it locally IE6 throws an
automation error. I didn't look to find it yet, but I will try later.

Try saving the demo zip file at
http://www.galasoft-lb.ch/myjavascript/CExplorer/cexplorer.demo.zip

I tested that on a few different PCs without errors.

The concept is solid, its implementation is what is difficult with the
state of security settings.

The problem isn't JS' lack of ability to save files locally, it is the
lack of privileges that prevents it from being reliable on an internet
website.

That's what I mean with "Many people assume that client-side JavaScript
cannot perform file-system operations on the client computer. Actually,
the objects needed are often found in the browsers, and the rest is only
a matter of compatibility (the way IE saves files is very different from
the way Firefox saves files...) and of permissions."

Maybe I should underline better the "permissions" thing.

Note also "I usually use these methods either in HTA applications
(running locally, granted extended privileges by IE), or in the "file:"
protocol. This is what they have been designed for."

Thanks for your feedback.

Laurent