
star1.png
star1.png 
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>53</title> <script src="js/jquery-1.11.1.js"></script> <style>*{ margin: 0; padding: 0;}body{ padding: 20px;}.star1{ width: 70px; height: 13px; background: url("images/star1.png") repeat-x left center;}.star2{/* width: 60%;*/ height: 13px; background: url("images/star2.png") repeat-x left center; float: left;} </style> <script>$(function(){ var fiveStars=function(num){ if(!num||num<3){return "--"; } return "<div class="star1"><div class="star2" style="width:"+num*20+"%"></div></div>"; }var str=fiveStars(4)$("body").html(str)}) </script></head><body><!--<div class="star1"><div class="star2"></div></div> --></body></html> 希望本文对大家学习javascript程序设计有所帮助。