Hi Karl:
That clears it up completely. Thanks!
Charlie
On Thu, Sep 17, 2009 at 10:43 AM, Karl Swedberg <k...@englishrules.com>wrote:
> Hey Charlie,
> It all comes down to the way the string is parsed. The Sizzle selector
> engine uses a Regular Expression to detect whether an attribute selector is
> being used:
>
> ATTR:
> /\[\s*((?:[\w\u00c0-\uFFFF_-]|\\.)+)\s*(?:(\S?=)\s*(['"]*)(.*?)\3|)\s*\]/,
>
> The parts of the regex that deal with quotation marks around the attribute
> value are (['"]*) and \3. The part that actually captures the attribute
> value is (.*?)
> So, it allows for single, double, or no quotation marks around the
> attribute value in the selector.
>
> Come to think of it, it also allows for multiple quotation marks. Strange,
> but this would work, too:
> $("input[name='''newsletter''']")
>
> It isn't really related to literal text vs. variable value. In order to
> pass in a variable, you need to concatenate it:
>
> var foo = 'newsletter';
> $("input[name=" + foo + "]")
>
> Hope that helps explain.
>
> --Karl
>
> ____________
> Karl Swedberg
> www.englishrules.com
> www.learningjquery.com
>
>
>
>
> On Sep 17, 2009, at 12:22 PM, Charlie Griefer wrote:
>
> Hi Karl:
>
> Hate to hijack the thread, but hopefully it's somewhat relevant to the
> original post.
>
> When I suggested the single quotes around the value 'bar', I was going off
> of what I saw in the docs at
> http://docs.jquery.com/Selectors/attributeEquals#attributevalue
>
> And the code sample:
> $("input[name='newsletter']").next().text(" is newsletter");
>
> I still consider myself relatively new to jQuery, so could you clarify
> about quoting the attribute value? Is it similar to terminating a line with
> a semi-colon (e.g. optional in JS)? Or is it literal text vs variable value
> (assuming -bar- here is a variable)?
>
> Thanks!
> Charlie
>
> On Thu, Sep 17, 2009 at 9:06 AM, Karl Swedberg <k...@englishrules.com>wrote:
>
>>
>> On Sep 17, 2009, at 5:13 AM, Charlie Griefer wrote:
>>
>> Pretty sure you need single quotes around bar.
>>
>> alert($("input[name='bar']").val());
>>
>>
>> No. The single quotes are unnecessary.
>>
>> On Thu, Sep 17, 2009 at 1:27 AM, pritisolanki <pritiatw...@gmail.com>
>> wrote:
>>
>>>
>>> Thanks Ralph.
>>>
>>> I tried following
>>>
>>> alert($("input[name=bar]").val());
>>>
>>> and rather then showing it's value it alert undefined ??? why?
>>>
>>
>> Where are you including your script tag? If it's in the <head>, are you
>> wrapping your alert() in $(document).ready? Are you sure you have an input
>> with name="bar"?
>>
>> Try this:
>>
>> $(document).ready(function() {
>> alert( $("input[name=bar]").val() );
>> });
>>
>>
>> --Karl
>>
>> ____________
>> Karl Swedberg
>> www.englishrules.com
>> www.learningjquery.com
>>
>>
>>
>
>
> --
> I have failed as much as I have succeeded. But I love my life. I love my
> wife. And I wish you my kind of success.
>
>
>
--
Charlie Griefer
http://charlie.griefer.com/
I have failed as much as I have succeeded. But I love my life. I love my
wife. And I wish you my kind of success.
