thanks for getting back to me.
problem is that i am not sure if i can do all the processing i need in the
callback function. because on my form i have
onsubmit="javascript:return validateForm(this)" so it calls my validateForm
function and if the validateform function returns true, the form submits,
otherwise it the form does not submit.
my validateForm function contains something like this for each check:
if (!comparePasswords(form.password.value, form.confirmPassword.value))
{
errorsfound += 1;
}
so each check calls a function to actually check a field. if that function
returns false, then i increment te errrsfound variable.
then at the end of my validateForm function, if the value of errorsfound is
greater than 0, i return false from the validateForm function which prevents
the form from being submitted.
so although i could use the post callback function in my checkEmailDups
function to display the necessar errors on the page (in the case of an email
duplicate being found), ho woudl i prevent the form from being sumbitted if
that was the only error on the page?
Rob Desbois-2 wrote:
>
> I've just spotted it after debugging it in Firebug.
>
> Anything which requires having a response for it to execute correctly,
> must
> be in the response-handling function.
> This is behaving exactly as required - the request is asynchronous, and
> you
> cannot guarantee that it will execute after the code that comes after it.
>
> The checkEmailDups() function cannot tell you the value without having to
> wait block execution until the response is received. Far better would be
> to
> send the check, and handle both cases within the callback function
> instead.
> This will also allow you to remove the (horrible) global variable.
>
> function checkEmailDups(myemail) {
> $.post("checkemail.cfm", { email: myemail }, function(data) {
> if ($.trim(data) === "available") {
> // allow whatever action is being performed
> }
> else if ($.trim(data) == "taken") {
> alert("That email address is taken");
> }
> });
> }
>
> --rob
>
> On 7/19/07, bdee1 <[EMAIL PROTECTED]> wrote:
>>
>>
>>
>> ok i may have figured out why this is happening.
>> i put replaces alert(dupsfound) with setTimeout('alert(dupsfound)',3000)
>> so
>> that the script waited 3 seconds before displaying the alert and then it
>> displayed the correct value
>>
>> so the key is that it IS settign the value properly but it just takes a
>> minute for the post to complete.
>>
>> so.... the next question is, how do i prevent the rest of the function
>> from
>> running until the post is finished?
>>
>>
>>
>> Rob Desbois-2 wrote:
>> >
>> > That should work if errorsFound is global - can you provide your code
>> or
>> > give us a link to look at?
>> > --rob
>> >
>> > On 7/19/07, bdee1 <[EMAIL PROTECTED]> wrote:
>> >>
>> >>
>> >>
>> >> i am building a function to validate a registration form for my site.
>> >> one
>> >> of
>> >> the things i need to validate is that the email address entered into
>> the
>> >> form does not already exist in the database.
>> >>
>> >> in my formValidate function i perform several tests. if a test fails
>> i
>> >> increment a errorsFound variable. at the end of my function if
>> >> errorsFound
>> >> is greater than 0, i do not submit the form.
>> >>
>> >> the test for my email field does a $.post to a checkEmail - a page
>> that
>> >> checks the database for duplicate email addresses. then my callback
>> >> function looks st the results of the post - if duplicates were found,
>> i
>> >> increment my errorsFound variable.
>> >>
>> >> problem is that from within my $.post callback function i cannot seem
>> to
>> >> access my errorsFound variable.
>> >>
>> >> how can i get my post callback function to increment my errorsFound
>> >> variable?
>> >> --
>> >> View this message in context:
>> >>
>> http://www.nabble.com/changing-the-value-of-a-global-variable-inside-an-post-callback-function--tf4111860s15494.html#a11691585
>> >> Sent from the JQuery mailing list archive at Nabble.com.
>> >>
>> >>
>> >
>> >
>> > --
>> > Rob Desbois
>> > Eml: [EMAIL PROTECTED]
>> > Tel: 01452 760631
>> > Mob: 07946 705987
>> > "There's a whale there's a whale there's a whale fish" he cried, and
>> the
>> > whale was in full view.
>> > ...Then ooh welcome. Ahhh. Ooh mug welcome.
>> >
>> >
>>
>> --
>> View this message in context:
>> http://www.nabble.com/changing-the-value-of-a-global-variable-inside-an-post-callback-function--tf4111860s15494.html#a11693506
>> Sent from the JQuery mailing list archive at Nabble.com.
>>
>>
>
>
> --
> Rob Desbois
> Eml: [EMAIL PROTECTED]
> Tel: 01452 760631
> Mob: 07946 705987
> "There's a whale there's a whale there's a whale fish" he cried, and the
> whale was in full view.
> ...Then ooh welcome. Ahhh. Ooh mug welcome.
>
>
--
View this message in context:
http://www.nabble.com/changing-the-value-of-a-global-variable-inside-an-post-callback-function--tf4111860s15494.html#a11707250
Sent from the JQuery mailing list archive at Nabble.com.
