-----Original Message-----
From: Robert Anglos [mailto:[EMAIL PROTECTED]]
Sent: Friday, December 03, 1999 10:19 AM
To: [EMAIL PROTECTED]
Subject: Re: JSP/HTML Field Validation
My comments relate to the Server vs Client side validation
My background includes several years of Forte, which is a three tier
client/server
environment and language (similar to Java). As such we have had to deal with
the
issue outlined in your question and I am giving you the take that we use
with
Forte.
Some of the considerations that we take into account when deciding where to
place
the processing, in this case the validation, is
- how complex is the validation, if simple let the client side handle it.
- where is the processing power (if it is anticipated that the client
machine may
be heavily utilized put it on the server.
- Likewise if the server is heavily utilized you may what to move it, or a
portion,
to the client.
- The amount of data required to do the validation (i.e. if you have to pass
lots
of data to the client do not do it)
relates to network traffic and speed to load the page.
- What is the being validated (i.e. do not validate the user id/password at
the
client side)
- To add some context to using this information Forte has a client side
event
handler. Thus there is no issues with having anything other than the native
Forte
on the client.
- One thing that can be done in Forte, that I will try in the Java/JSP,
is... Forte
widgets have an object, that is similar to a vector, such that when the user
selects a value (i.e. from a drop list) an associated value is used. (i.e.
if the
user was selecting 'U.S.A.' from a countries drop list the value that would
be
transferred to a 'record' would be 1). This could probably be accomplished
using
beans.
I have done something similar, to the above, using servlets, though not in
the same
event driven manor, but not on the client side. Perhaps someone could
comment more
on that side.
Robert
Heske Chris wrote:
> What is the generally accepted way of performing HTML field validation
> using JSPs. Is it better done in JavaScript because it's performed
> client side?
>
signoff JSP-INTEREST
===========================================================================
To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST".
FAQs on JSP can be found at:
http://java.sun.com/products/jsp/faq.html
http://www.esperanto.org.nz/jsp/jspfaq.html
