[PHPLondon-discuss] JQuery .attr

[Harry Roberts]

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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