1. HTML
2. <ul>
3. <li>i have <strong>one</strong> here and <strong>another</strong></li>
4. <li>i have only <strong>one</strong></li>
5. </ul>

1. $('li').click(
2. function()
3. {
4. var isTwo=$(this).is(
5. function()
6. {
7. return $('strong',$(this)).length==2;
8. }
9. );
10. if (isTwo)
11. {
12. $(this).css('background','green');
13. }
14. else
15. {
16. $(this).css('background','yellow');
17. }
18. }
19. );

My question is what does $(this) in $(this).is(.............) do here? If I change to $('strong').is(..........) it doesn't work as expected.