[PHPLondon-discuss] JQuery .attr

[Alex V.]

2Harry: anyway, thank you for the interest

p.s. though this is javascript stuff, but I found jQuery very
interesting and powerful in building ajax interfaces, and think, will
use it in future.

~Alex

Monday, September 24, 2007, 12:41:07 PM, you wrote:

HR> Ah nice work :D 

>> -----Original Message-----
>> From: phplondon-discuss-bounces at lists.phplondon.org 
>> [mailto:phplondon-discuss-bounces at lists.phplondon.org] On 
>> Behalf Of Alex V.
>> Sent: 24 September 2007 10:14
>> To: PHP London discussion list
>> Subject: Re: [PHPLondon-discuss] JQuery .attr
>> 
>> Harry,
>> 
>> I've done it easier -
>> 
>> some_val = $('#element').attr('value') || ''
>> 
>> --
>> Alex
>> 
>> Monday, September 24, 2007, 11:45:58 AM, you wrote:
>> 
>> HR> You should be able to do something like the following which will 
>> HR> distinguish between an undefined (null) value and an empty string.
>> 
>> HR> But yeah, this is tedious :\
>> 
>> HR> // --------------------------------------
>> 
>> HR> var some_val = $('#element').val();
>> HR> if( typeof(some_val) == "undefined" ) {
>> HR>   // Value is undefined
>> HR> } else
>> HR> {
>> HR>   // Value is defined, but may be an empty string.
>> HR> }
>> 
>> HR> // --------------------------------------
>> 
>> >> -----Original Message-----
>> >> From: phplondon-discuss-bounces at lists.phplondon.org
>> >> [mailto:phplondon-discuss-bounces at lists.phplondon.org] On 
>> Behalf Of 
>> >> Marcus Bointon
>> >> Sent: 23 September 2007 00:21
>> >> To: info at intoex.com; PHP London discussion list
>> >> Subject: Re: [PHPLondon-discuss] JQuery .attr
>> >> 
>> >> On 22 Sep 2007, at 11:38, Alex V. wrote:
>> >> 
>> >> > let i have <input id=element name=name type=text value="" 
>> >> /> if I do
>> >> > $('#element').attr('value') - it returns "undefined"
>> >> 
>> >>  From the jquery docs I can see that the recommended way of doing 
>> >> this is $('#element').val(). I don't know if that will give you 
>> >> anything different, but it does seem odd that it doesn't 
>> distinguish 
>> >> between undefined and an empty string.
>> >> 
>> >> You're missing quotes around your attribute values, but 
>> you probably 
>> >> knew that.
>> >> 
>> >> Marcus
>> >> --
>> >> Marcus Bointon
>> >> Synchromedia Limited: Creators of
>> >> http://www.smartmessages.net/ UK resellers of info at hand 
>> CRM solutions 
>> >> marcus at synchromedia.co.uk | http://www.synchromedia.co.uk/
>> >> 
>> >> 
>> >> 
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