Re: can i submit 2 jsp pages to the server at a single button click.

From:
"Oliver Wong" <owong@castortech.com>
Newsgroups:
comp.lang.java.programmer
Date:
Thu, 27 Apr 2006 16:23:59 GMT
Message-ID:
<ze64g.829$nq3.558@clgrps12>
"Owen Jacobson" <angrybaldguy@google-email-service.example.com> wrote in
message
news:pan.2006.04.27.15.32.02.155285@google-email-service.example.com...

On Wed, 26 Apr 2006 13:43:51 +0000, Oliver Wong wrote:

Can you tell me what those reasons

[that frames are bad]

may be? I find the "navigation frame
+ main content frame" to be a pretty common, and as far as I can tell,
relatively problem free design. I'm aware that some browsers (e.g. lynx)
may have problem rendering frames, but they degrade relatively
elegantly.


Because they're an extremely leaky abstraction of templates.

- If you arrive at the content part of a frameset without the frameset
  (eg., from a search engine hit), you cannot navigate the site. Working
  around this requires scripting, which is less than optimal.


    Usually what is done is that each page in the "content frame" either has
something you can click on to take you to the top level document (see the
"frames" and "no frames" link in generated JavaDocs, for example), or each
page in the content frame will contain navigational links as well (e.g. for
sequential content, the navigational frame will act as a table of contents,
with the links in the content frames will be "forward one page" or
"backwards one page").

- If you find a page within a frameset that you're interested in, and you
  bookmark it, when you load the bookmark odds are good you'll arrive
  back at the beginning of the frameset.


    Depends on the browser implementation. I believe FireFox stores the
state of each frame when bookmarked.

- They break URLs. A single URL should point to a single resource, but a
  frameset's URL refers to a series of resources (one for every page you
  navigate to within the frameset, not "one for every frame").


    This is the strongest argument against frames, in my opinion, and I
concede there isn't much you can do about this if you use frames.

    - Oliver

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