From: John Calvin (mercurial@disinfo.net)
Date: Sat Jan 20 2001 - 09:31:02 MST
On Sat, 20 Jan 2001 15:39:56 +0100 Eugene.Leitl@lrz.uni-muenchen.de wrote:
>John Calvin wrote:
>
>> Yes, this is actually quite easy to do with a little JavaScript, you simply check to see whether the
>> refering page is within your website and if not the redirect to your main page.
>
>This of course assumes that JavaScript is activated on the other end.
>Usability of something should be hinged on as little assumptions as
>possible. A web form with JavaScript based validation is nice, but this
>in no way suggests you can forget server-side validation of the form.
>
>The web is a broken thing, but one should not stumble into known minefields
>deliberately.
Netscape versions past 3, IE versions past 4, and Opera, I am not sure about other browsers such as Lynx, but with the above list you have the majority >90% of the market and that is probably good enough for most people. If the user has chosen to turn off JavaScripting in their browser well there isn't much anyone can do with that. Besides JavaScript can be made to run serverside eliminating that issue. And JSP/ASP/PHP all run Serverside as well dynamically delivering content to the desktop, using JavaScript inside the Page which isecuted at the server, not the browser. All you have to do is look for the large sign that says MINES, and then step carefully anyway.
John Calvin
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