1 <!DOCTYPE HTML> 2 <html lang="en-US"> 3 <head> 4 <meta charset="UTF-8"> 5 <title>javascript星级评分</title> 6 7 <style type="text/css"> 8 9 *{margin:0;padding:0;} 10 11 .wrapper{height:20px;padding:5px;width:130px;margin:100px auto 10px;} 12 13 a{float:left;width:26px;height:20px;background:url(star.png) 0 -20px no-repeat;} 14 15 p{font:24px SimSun;width:130px;margin-left:auto;margin-right:auto;} 16 17 </style> 18 </head> 19 <body> 20 <div class="wrapper"> 21 22 <a href="javascript:;"></a> 23 <a href="javascript:;"></a> 24 <a href="javascript:;"></a> 25 <a href="javascript:;"></a> 26 <a href="javascript:;"></a> 27 28 </div> 29 30 <p></p> 31 </body> 32 </html> 33 34 <script type="text/javascript"> 35 36 window.onload = function(){ 37 38 var star = document.getElementsByTagName(‘a‘); 39 40 var oDiv = document.getElementsByTagName(‘div‘)[0]; 41 42 var temp = 0; 43 44 45 46 for(var i = 0, len = star.length; i < len; i++){ 47 48 star[i].index = i; 49 50 51 star[i].onmouseover = function(){ 52 clear(); 53 54 for(var j = 0; j < this.index + 1; j++){ 55 56 star[j].style.backgroundPosition = ‘0 0‘; 57 58 } 59 60 } 61 62 star[i].onmouseout = function(){ 63 for(var j = 0; j < this.index + 1; j++){ 64 star[j].style.backgroundPosition = ‘0 -20px‘; 65 } 66 current(temp); 67 } 68 69 70 star[i].onclick = function(){ 71 temp = this.index + 1; 72 73 document.getElementsByTagName(‘p‘)[0].innerHTML = temp + ‘ 颗星‘; 74 current(temp); 75 76 } 77 78 } 79 //清除所有 80 function clear(){ 81 for(var i = 0, len = star.length; i < len; i++){ 82 star[i].style.backgroundPosition = ‘0 -20px‘; 83 } 84 } 85 //显示当前第几颗星 86 function current(temp){ 87 for(var i = 0; i < temp; i++){ 88 star[i].style.backgroundPosition = ‘0 0‘; 89 } 90 } 91 92 }; 93 94 </script>
原文：http://www.cnblogs.com/xiaomili/p/6286331.html