------------------------------------ 2015-05-26------------------------------------

//倒计时

function ShowCountDown(year,month,day,divname) {

var now = new Date();

var endDate = new Date(year, month-1, day);

var leftTime=endDate.getTime()-now.getTime();

var leftsecond = parseInt(leftTime/1000);

var day1=Math.floor(leftsecond/(60*60*24));

var hour=Math.floor((leftsecond-day1*24*60*60)/3600);

var minute=Math.floor((leftsecond-day1*24*60*60-hour*3600)/60);

var second=Math.floor(leftsecond-day1*24*60*60-hour*3600-minute*60);

$("#"+divname).html(""+year+"年"+month+"月"+day+"日还有："+day1+"天"+hour+"小时"+minute+"分"+second+"秒");

}

window.setInterval(function(){ShowCountDown(2015,5,20,'time');}, 1000);

 

1、修改class

html代码：

专题

jquery代码：

$("#zhuantiCss").attr("class","secnav f_w");

 

 

2、操作ul、li

html代码：

     
              
      
专题
              
     

jquery代码：

var child = $("#topMenu").children().length;    if(child < 6){         $("#topMenu li").attr("class","secnav f_w");            $("#topMenu").append("
" + name + "
");        $("#zhuanti").hide();        showDataPage(1,p_id);    }else{        alert("您打开太多页面了，请关闭一些再打开！");    }