CSDN下载资源评论时的闪烁是怎么实现的

由于代码不全，只发个大体思路吧，你可以在每组div间放个span用来区分组
即function getMsg() 
        { 
            var content=document.getElementById("txtContent").value; 
            var name=document.getElementById("txtName").value; 
            var divcontent=document.getElementById("AddContent"); 
            //divcontent.innerHTML=""; 
            divcontent.innerHTML+=" <span><div style='width: 100%; height: 30px; background-color: #dcdcff; font-weight: bold; font-size: 12px; color: blue;'>"+name+":发表评论 </div>"; 
            divcontent.innerHTML+=" <div style='width: 100%; height: 40px; border-bottom: #66ccff 1px dashed; font-size: 12px;'>"+content+" </div>"; 
            divcontent.innerHTML+=" <div style='width: 100%; height: 30px; background-color: #ccffff; font-weight: bold; font-size: 12px; color: blue;'>"+"时间: </div></span>"; 
            FadeText(); 
            i=0; 
        } 
然后在进行变色的时候再根据新加入的SPAN来确定哪个是最后一组function FadeText()  
     {
      var obj= document.getElementById("AddContent")
      var objSpans=obj.getElementsByTagName("span")
      var objSpan=objSpans[objSpans.length-1]
        if(i <18) 
        { 
             objSpan.style.visibility = "visible"; 
             objSpan.style.backgroundColor = colors2[i]; 
             i++; 
             timerID2 = setTimeout( "FadeText()", 100); 
         } 
         else 
         { 
            objSpan.style.backgroundColor="white"; 
         } 
    }