Re: avascript w/Perl question - Simple for most......

jshanman said the following on 1/30/2006 3:01 PM:
> amerar@iwc.net wrote:
>> Hi All,
>>
>> I have a form that uses Javascript to validate some fields. Whe the
>> user selects to submit the form with certain values selected, I want to
>> be able to execute a Perl script, query the MySQL database to get my
>> resuts and return an ALERT box to the user if his form input was
>> invalid.
>>
>> Problem is, I do not want to change the screen. I just want the dialog
>> to pop up. I am very good at Perl, but I'm less than a novice at
>> Javascript. I was hoping that if someone had an exmple of this, they
>> could put it up and explain it to me........
>>
>> Thanks,
>>
>> Arthur
>
>
> You would need to use XmlHTTPRequest to send all the form fields to a
> perl page that can check the input against the database/validation
> functions, and either return OK to submit, or return false for a
> particular field name/number. This is also known as AJAX.
> http://www.w3schools.com/xml/xml_http.asp

Why do people continue to make the mistake of thinking that
XMLHTTPRequest is the only way to do that? It's not. It is also not the
most widely supported way of doing it. One simple solution that comes to
mind is to submit a dummy form in a hidden IFrame and read the results
back from there.

-- 
Randy
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