学步园

1. 鼠标点击评分之后不能再次评分。
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8"><br /> <style type="text/css"> *{ margin:0; padding:0;} body{font:12px/1.125 Arial,Helvetica,sans-serif;background:#fff;} table{border-collapse:collapse;border-spacing:0;} li{list-style:none;} input[type="text"],input[type="password"],textarea{outline-style:none;-webkit-appearance:none;} textarea{resize:none} address,caption,cite,code,dfn,em,i,th,var{font-style:normal;font-weight:normal;} legend{color:#000;} a{color:#0a8cd2;text-decoration:none;} a:hover{text-decoration:underline;} .clearfix:after{content:".";display:block;height:0;clear:both;visibility:hidden;} .clearfix{display:inline-block;} .clearfix{display:block;} .none{display:none} .demo{ position:relative; width:300px;margin:0 auto; padding-top:120px;} .list li{ float:left; width:16px; height:16px; margin-right:3px;cursor:pointer; display:inline; overflow:hidden; background:url(http://images.cnitblog.com/blog/100150/201304/02220917-50348f051a004a7385e4aaafcc3ce7a6.png) 0 -16px no-repeat;} .list li.cur{ background-position:0 0;} .score{ font-size:14px; color:#f60; padding:0 5px;} .text{ position:absolute; padding:3px 5px; left:135px;top:120px; border:1px solid #ccc;} </style> <div id="demo" class="demo"> <ul class="list"> <li> <li> <li> <li> <li> </ul> <p class="score"> <p class="text none">力荐</p> </div> <p><script type="text/javascript"> var oDemo = document.getElementById('demo'); var oUl = oDemo.getElementsByTagName('ul')[0]; var oScore = oDemo.getElementsByTagName('p')[0]; var oP = oDemo.getElementsByTagName('p')[1]; var aLi = oUl.getElementsByTagName('li'); var oLi = null; var aData = ['较差', '一般', '好看', '推荐', '力荐']; var bCheck = false; for(var i = 0; i < aLi.length; i++){ var first = null; aLi[i].index = i; oLi = aLi[i]; oLi.onmouseover = function(){ for(i = 0; i < aLi.length; i++){ aLi[i].className = ''; } for(var j = 0; j <= this.index; j++){ aLi[j].className = 'cur'; } oP.style.display = 'block'; oP.innerHTML = aData[this.index]; if(!bCheck){ oScore.innerHTML = (this.index + 1) * 20 + '分'; } } oLi.onclick = function(){ if(!bCheck){ first = this.index; bCheck = true; alert('评分成功!'); } else { for(i = 0; i < aLi.length; i++){ aLi[i].className = ''; } for(var j = 0; j <= first; j++){ aLi[j].className = 'cur'; } alert('你已评过分!'); } } } </script>

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