Writing a File
Question: How do I write a file from JavaScript?
Answer:
Writing a file from JavaScript is just as easy as writing a file from a Java applet.
Your script cannot write files itself; it should call a Java applet's public method
which will actually do all the dirty file writing work for you.
The bad news is that
- Writing is a privileged operation, and
therefore your Java applet must be digitally signed in order to write files.
- Applet signing for Internet Explorer is completely different from
applet signing for Netscape Navigator.
- Signed applets may not work properly in Netscape Navigator 3.
- What's the worst, it's very insecure to put privileged operations
in public methods of signed applets!
If you publsh such an applet, a malicious code could easily subvert the applet's
public methods, and you (the applet publisher/signer) will be sued for any damage!
Therefore, nobody publishes scripts that write files via signed applets, although
in versions 4 of both major browsers it's technically possible.
JavaScripter.net.
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© 1999-2006, Alexei Kourbatov
