css pseudo-class （伪类）checked unchecked

checked

input[type="checkbox"]:checked
{/* styles */}


unchecked

input[type="checkbox"]:not(:checked)

{/* styles */}


:unchecked does not exist in the level 3 Selectors or UI specs, nor has it appeared in level 4 of Selectors yet. The Selectors specs wouldn't bother to suggest using :not(:checked) were there such a pseudo-class.

http://stackoverflow.com/questions/8846075/css3-unchecked-pseudo-class