Attribute Filters: Compare class and id, create an id attribute with class
attribute.
Add new id attribute, using a class attribute as a handle. This
nascent id is completely functional
Refresh/Reload
$("[class=x3]"  
$("[id=x3]")  
$("[id=x3]")  
Div1
- Item 1
- Item 2
- Item 3
- Item 4