Dear ALL:
Yesterday I post question to the board and I am posting it again.
I have a data control in JavaScript. How I can restrict this control to not
to write in the history. The problem is when I select the date and date
comes on the text box if you try to press the back button then it won't
work.
Thanks in advance.
Regards,
Meraj
>From: "Hinojosa, Robert A" <[EMAIL PROTECTED]>
>Reply-To: [EMAIL PROTECTED]
>To: "'[EMAIL PROTECTED]'" <[EMAIL PROTECTED]>
>Subject: RE: question.
>Date: Tue, 31 Jul 2001 11:07:13 -0400
>
>woops, i guess i forgot to paste the code portion of the email. Yes billy,
>definately persistant vars, particularly session vars. I understand the
>need to lock, but what he is saying is that since your only doing a lookup
>in the session structure, you don't need to lock the
>isDefined("session.var"). Is this a true statement?
>
>CODE PORTION OF EMAIL:
>
><cfif IsDefined("Session.MyVar")> <!--- check it exists --->
> <!--- note: this is longhand as you can read variables in an
>exclusive --->
> <!--- lock but for this example a more verbose demonstration is
>needed --->
> <!--- read from the variable --->
> <cflock scope="session" type="readonly" timeout="10">
> <cfset V_MyVar = Session.MyVar>
> </cflock>
> <!--- write to the variable --->
> <cflock scope="session" type="exclusive" timeout="10">
> <cfset Session.MyVar = 52>
> </cflock>
></cfif>
>
>
>
>-----Original Message-----
>From: Billy Cravens [mailto:[EMAIL PROTECTED]]
>Sent: Tuesday, July 31, 2001 9:55 AM
>To: [EMAIL PROTECTED]
>Subject: Re: question.
>
>
>It may do a read, or it may simply be a pointer to memory where existing
>variables are defined, with the actual value of the variable in a different
>location.
>
>However, I can't understand why you'd need to a lock on a variable read
> I'm assuming you're referring to locking persistent-scope variables, like
>application). The whole purpose of the lock is to ensure data integrity
>(prevent writing to a variable while another user is reading it). However,
>this shouldn't be the case with reading a variable.
>
>---
>Billy Cravens
>HR Web Systems, EDS
>[EMAIL PROTECTED]
>
>----- Original Message -----
>From: "Hinojosa, Robert A" <[EMAIL PROTECTED]>
>To: <[EMAIL PROTECTED]>
>Sent: Tuesday, July 31, 2001 9:17 AM
>Subject: question.
>
>
> > I received this email on another list and I am almost positive he is
>wrong.
> > I've read nearly everything there is to know about locking and cf, but I
> > wanted to make sure, so I am asking the greats here in this list.
>Checking
> > for an isDefined("") is actually doing a type of a read, isn't it, so
>you
> > would need a lock around it?
> >
> > EMAIL:
> > Just as a quick note, you don't need to lock variables in an
>IsDefined("")
> > the reason being, you are not reading from it or writing to it.... just
> > checking its there.....
> >
> >
> > Robert Hinojosa
> > [EMAIL PROTECTED]
> > 972.243.4343 x7446
> >
> >
> >
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