| <div tabindex="+4"></div> => 4 |
| <div tabindex="-4"></div> => -4 |
| <div tabindex="+-4"></div> => -1 |
| <div tabindex="-+4"></div> => -1 |
| <div tabindex="+04"></div> => 4 |
| <div tabindex="-04"></div> => -4 |
| <div tabindex="+"></div> => -1 |
| <div tabindex="-"></div> => -1 |
| <div tabindex=" +4"></div> => 4 |
| <div tabindex=" -4"></div> => -4 |
| <div tabindex=" +-4"></div> => -1 |
| <div tabindex=" -+4"></div> => -1 |
| <div tabindex=" +04"></div> => 4 |
| <div tabindex=" -04"></div> => -4 |
| <div tabindex=" +"></div> => -1 |
| <div tabindex=" -"></div> => -1 |
| <div tabindex="+4 "></div> => 4 |
| <div tabindex="-4 "></div> => -4 |
| <div tabindex="+-4 "></div> => -1 |
| <div tabindex="-+4 "></div> => -1 |
| <div tabindex="+04 "></div> => 4 |
| <div tabindex="-04 "></div> => -4 |
| <div tabindex="+ "></div> => -1 |
| <div tabindex="- "></div> => -1 |
| <div tabindex="	+4"></div> => 4 |
| <div tabindex="	-4"></div> => -4 |
| <div tabindex="	+-4"></div> => -1 |
| <div tabindex="	-+4"></div> => -1 |
| <div tabindex="	+04"></div> => 4 |
| <div tabindex="	-04"></div> => -4 |
| <div tabindex="	+"></div> => -1 |
| <div tabindex="	-"></div> => -1 |
| <div tabindex="+4	"></div> => 4 |
| <div tabindex="-4	"></div> => -4 |
| <div tabindex="+-4	"></div> => -1 |
| <div tabindex="-+4	"></div> => -1 |
| <div tabindex="+04	"></div> => 4 |
| <div tabindex="-04	"></div> => -4 |
| <div tabindex="+	"></div> => -1 |
| <div tabindex="-	"></div> => -1 |
| <div tabindex=" |
| +4"></div> => 4 |
| <div tabindex=" |
| -4"></div> => -4 |
| <div tabindex=" |
| +-4"></div> => -1 |
| <div tabindex=" |
| -+4"></div> => -1 |
| <div tabindex=" |
| +04"></div> => 4 |
| <div tabindex=" |
| -04"></div> => -4 |
| <div tabindex=" |
| +"></div> => -1 |
| <div tabindex=" |
| -"></div> => -1 |
| <div tabindex="+4 |
| "></div> => 4 |
| <div tabindex="-4 |
| "></div> => -4 |
| <div tabindex="+-4 |
| "></div> => -1 |
| <div tabindex="-+4 |
| "></div> => -1 |
| <div tabindex="+04 |
| "></div> => 4 |
| <div tabindex="-04 |
| "></div> => -4 |
| <div tabindex="+ |
| "></div> => -1 |
| <div tabindex="- |
| "></div> => -1 |
| <div tabindex=" +4"></div> => -1 |
| <div tabindex=" -4"></div> => -1 |
| <div tabindex=" +-4"></div> => -1 |
| <div tabindex=" -+4"></div> => -1 |
| <div tabindex=" +04"></div> => -1 |
| <div tabindex=" -04"></div> => -1 |
| <div tabindex=" +"></div> => -1 |
| <div tabindex=" -"></div> => -1 |
| <div tabindex="+4 "></div> => 4 |
| <div tabindex="-4 "></div> => -4 |
| <div tabindex="+-4 "></div> => -1 |
| <div tabindex="-+4 "></div> => -1 |
| <div tabindex="+04 "></div> => 4 |
| <div tabindex="-04 "></div> => -4 |
| <div tabindex="+ "></div> => -1 |
| <div tabindex="- "></div> => -1 |
| <div tabindex="+4xx"></div> => 4 |
| <div tabindex="-4xx"></div> => -4 |
| <div tabindex="+-4xx"></div> => -1 |
| <div tabindex="-+4xx"></div> => -1 |
| <div tabindex="+04xx"></div> => 4 |
| <div tabindex="-04xx"></div> => -4 |
| <div tabindex="+xx"></div> => -1 |
| <div tabindex="-xx"></div> => -1 |
| <div tabindex="+4"></div> => 4 |
| <div tabindex="-4"></div> => -4 |
| <div tabindex="+-4"></div> => -1 |
| <div tabindex="-+4"></div> => -1 |
| <div tabindex="+04"></div> => 4 |
| <div tabindex="-04"></div> => -4 |
| <div tabindex="+"></div> => -1 |
| <div tabindex="-"></div> => -1 |
| <div tabindex="+4/"></div> => 4 |
| <div tabindex="-4/"></div> => -4 |
| <div tabindex="+-4/"></div> => -1 |
| <div tabindex="-+4/"></div> => -1 |
| <div tabindex="+04/"></div> => 4 |
| <div tabindex="-04/"></div> => -4 |
| <div tabindex="+/"></div> => -1 |
| <div tabindex="-/"></div> => -1 |