jQuery倒计时

引用js

<script language="javascript" src="jquery-1.10.2.js"></script>

js

<script language="javascript">
      $(document).ready(function(){
             var intSecond=60;
             timer(intSecond);
       });
       
       function timer(intSecond){
              window.setInterval(function(){
                       var day=0;
                       var hour=0;
                       var minute=0;
                       var second=0;
                       if(intSecond>0){
                              day=Math.floor(intSecond/(60*60*24));
                              hour=Math.floor(intSecond/(60*60)-day*24);
                              minute=Math.floor(intSecond/60-day*24*60-hour*60);
                              second=Math.floor(intSecond)-day*24*60*60-hour*60*60-minute*60;
                       }
                       if(hour<=9){
                              hour='0'+hour;
                        }
                        if(minute<=9){
                              minute='0'+minute;
                        }
                        if(second<=9){
                              second='0'+second;
                        }
                        $("#day_show").html(day+'天');
                        $("#hour_show").html(hour+'时');
                        $("#minute_show").html(minute+'分');
                        $("#second_show").html(second+'秒');
                        intSecond--;    
              },1000); 
       }
</script>

html

    <h1>
       jQuery倒计时
    </h1>
    <div>
        <span id="day_show">
            0天
        </span>
        <strong id="hour_show">
            0时
        </strong>
        <strong id="minute_show">
            0分
        </strong>
        <strong id="second_show">
            0秒
        </strong>
    </div>