// Refining selections. $( "div.foo" ).has( "p" ); // div.foo elements that contain <p> tags $( "h1" ).not( ".bar" ); // h1 elements that don't have a class of bar $( "ul li" ).filter( ".current" ); // unordered list items with class of current $( "ul li" ).first(); // just the first unordered list item $( "ul li" ).eq( 5 ); // the sixth