Wrap a span around some text in jQuery

Question

What I have :

    

        My text
        

            
blahblahblah
              


        

Answer 1

Try:

$('#myId > li').each(
    function(){
        $(this.firstChild).wrap('');
    });

JS Fiddle demo.

With regards to wanting to add the class to the ul:

$('#myId > li').each(
    function(){
        $(this.firstChild).wrap('');
        $(this).find('ul').addClass('myClass');
    });

JS Fiddle demo.