How to open and save text files using Javascript ?

[Bips123]

Hi
First of all, let me tell you that this is not a homework question, since i am no longer in college, i don't get homework.

Ok now to the question => Can you please give me a little example java script to open and save text files

Thank you in advance

[DaveSawers]

No. Javascript has no access to the file system on your computer. This is for security reasons to prevent web sites hoovering up your local files.

You can use scripting (e.g. PHP) that runs on the web server and reads or writes files there and you can use Javascript (AJAX) to call back to the server to get the information you want from those files.

[freezea]

If the file is on the same server, you can read it using XHR and use the responseText property to get at the contents. If you’re a prototype user, it would look like this:
new Ajax.Request(‘myfile.txt’, {
onComplete: function (transport) {
alert(transport.responseText);
}
});

[danlefree]

Microsoft allows JScript to access the operating system shell to perform commands on the local machine - though I wouldn't recommend using this technique for websites as the browser will either ignore the script, throw errors, or present users with an ominous security dialog.

[Uncle Dog]

If you are looking for a way to preserve data between site visits - you could use JavaScript to create a cookie. It can contain roughly 4Kb, that's quite a lot of text.

[morestar]

as freezea sort of mentioned...you could use ajax which stands for asynchronous JavaScript + XML.

I'm not sure if you can open text files but I believe you can. If not someone else will clarify this for you.

The only thing is you're going to have to find a ajax script that sort of does what you want and hack (edit) it to your desires.

[Uncle Dog]

...and we've all jumped in and assumed you meant JavaScript (looking at your post maybe you meant Java). What exactly do you need to do with this NOT homework.

[morestar]

Originally Posted by morestar

as freezea sort of mentioned...you could use ajax which stands for asynchronous JavaScript + XML.

I'm not sure if you can open text files but I believe you can. If not someone else will clarify this for you.

The only thing is you're going to have to find a ajax script that sort of does what you want and hack (edit) it to your desires.

wow, actually you can't open a local text file with ajax...I just searched around and found nothing that proves you can either...

my wrong...

[DaveSawers]

Originally Posted by morestar

wow, actually you can't open a local text file with ajax...

You can't do any file stuff on the client because it would be an horrendous security violation. It is possible to get access to the clipboard on the client, although this too should be totally blocked for security reasons. If you use Firefox, they quite rightly make it extremely difficult to allow. If you are an IE user, you can let any web site have access to your clipboard simply by answering yes to the alert that pops up when something tries to access your clipboard!

You can do all file operations on the server using AJAX; save and read files there and pass the contents down to the client.

[freezea]

In my opinion, you should refer to the url below:
How to read and write files in JavaScript

Reading / Writing a text file? - JavaScript / Ajax / DHTML answers

Can javascript open and write to a text file? - windows - JavaScript - Forums at ProgrammersHeaven.com

[DaveSawers]

Hmm.

Except your first link says use an ActiveX control (which is nothing to do with Javascript).

Your second and third links basically reiterate what has been said above.