Christopher Jordan schrieb:
> Klaus Hartl wrote:
>> Christopher Jordan schrieb:
>>
>>> Hi folks,
>>>
>>> How can I tell what class (or classes) an element has? For instance I've
>>> got an elements like:
>>>
>>> <div class="classA classB"></div>
>>> <div class="classA classC"></div>
>>>
>>> How can I select all elements that have classA and ClassB but not classC?
>>>
>>
>> $('div.classA, div.classB').not('.classC')
>>
>> In case you want only elements that are of classA and classB use this:
>>
>> $('div.classA.classB')
>>
> I had tried something like this, but didn't get the syntax quite right.
> I wasn't caring about the div part of it and just said:
> $(.classA .classB)... with a space.
The div part (type selector) was added by me just for better performance.
The selector ".classA .classB" would select all .classB that are a
descendant of .classA. With a comma you can group selectors.
It's pretty useful when working with jQuery to know about CSS selectors,
even if you don't do CSS:
http://www.w3.org/TR/CSS21/selector.html
And if you want to "translate" a given selector to human readable
english (or spanish ;-)), you can use Select'O'Racle:
http://gallery.theopalgroup.com/selectoracle/
"div.classA.classB" gives you the following for example:
Selects any div element with a class attribute that contains the word
classA or any div element with a class attribute that contains the word
classB.
You can even learn about selectors just by playing around with this.
>>> I'd also like to know how to select all items of a certain class and
>>> attribute. For instance:
>>>
>>> <div class="classA" Status="On"></div>
>>> <div class="classA" Status="Off"></div>
>>> <div class="classA" Status="Off"></div>
>>> <div class="classA" Status="On"></div>
>>> <div class="classA" Status="Off"></div>
>>> <div class="classA" Status="Off"></div>
>>>
>>> I want jQuery to match all the elements that are of classA and that have
>>> the Status attribute set to "On". How would I do that?
>>>
>>> $('div.classA').filter('[EMAIL PROTECTED]"On"]')
>>>
> Ah! I looked at contains... didn't even see filter. My eyes must have
> just passed over it in scanning the API.
contains is for looking up if an element in question has a particular
child, but cannot be used for attributes.
> Thanks heaps, Klaus! I really appreciate it! :o)
Your welcome!
-- Klaus
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