jQuery Forum

problem: I have this complicated search I want to make via jQuery, I realized that I will have to nest several selectors/functions and I don't know how the syntax works for that.

example:I'm looking to find all input fields that exist in tab(i) that are adjacent (or a sibling of) labels that have a span with an 'asterisk' class. Then I want to change the class of that input into "required". I have potentially hundreds of such input fields and as such it's impossible to refer them by id or whatever.

<div id="tab0">
 <div id="identity_form" class="standardForm" name="identity" method="post" action="/credentials.php">
       <div class="fields_container"> 
 <div class="field"> 
                                       <label for="FirstName"><span class="asterisk">*</span>First Name</label>
                               <input type="text" class="" id="FirstName" name="FirstName" maxlength="48" value="" />
                    </div>     

i tried this:
$('#tab'+i).find(('.asterisk:parent+input'));
but it just didn't work.

explanation:  I found this kind of nesting in the web:

$(".someDiv .someSpan:parent(:has(input:checked))").addClass("hasSelectedCB");
the problem is that jQuery has :has, :parent but it doesn't have something like :sibling, I will have to use + operator..

question: How can I use the '+' sibling operator in conjunction with functions like .find() etc