嗨,请任何人给我一个解决方案.我想从这个html中删除整个div和span,除了< span>中的4.请任何人
<div class=\"fivestar-widget-static fivestar-widget-static-Vote fivestar-widget-static-5 clear-block\"> <div class=\"star star-1 star-odd star-first\"> <span class=\"on\">4</span> </div> <div class=\"star star-2 star-even\"> <span class=\"on\"></span> </div> <div class=\"star star-3 star-odd\"> <span class=\"on\"></span> </div> <div class=\"star star-4 star-even\"> <span class=\"on\"></span> </div> <div class=\"star star-5 star-odd star-last\"> <span class=\"off\"></span> </div> </div>