求页面倒计时源码

Question

如题

Answer 1

    google!有很多！

Answer 2

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
 Date b= sdf.parse("1987-3-4");
 Date a= new Date();
 long time  = (a.getTime()-b.getTime())/1000/60/60/24;

Answer 3

<div id="hxtime" style="padding:5px 0 0 0;width:680px; height:1%; margin:10px auto;border:1px solid blue; "></div>   function ShowTimes(){  
    LeaveTime = AfterTime - new Date();  
    LeaveDays=Math.floor(LeaveTime/(1000*60*60*24));//天  
    LeaveHours=Math.floor(LeaveTime/(1000*60*60)%24);//时  
    LeaveMinutes=Math.floor(LeaveTime/(1000*60)%60);//分  
    LeaveSeconds=Math.floor(LeaveTime/1000%60);//秒   
    var q=1000-new Date().getMilliseconds();  
    if(q<10)
    {  
    q="00"+q;  
    }  
    if(q>=10 && q<100)
    {  
    q="0"+q;  
    }  
    document.getElementById("hxtime").innerHTML="距离下班还有<font color=red>"+LeaveHours+"</font>时<font color=red>"+LeaveMinutes+"</font>分<font color=red>"+LeaveSeconds+"</font>秒<font color=red>"+q+"</font>毫秒";  
}  
var AfterTime= new Date();
AfterTime.setHours(18,0,0,0);  
setInterval(ShowTimes,100); 

Answer 4

<a href="http://www.sina.com" id="a_url"></a>
<span id="span_timer"></span><script type="text/javascript"> (function() {
    var total = 3; // 倒计时
    var span_timer = document.getElementById("span_timer");
    span_timer.innerHTML = total;
    var timer = setInterval(function() {
        if (total <= 0) {
            location.href = document.getElementById("a_url").href; // 跳转
            clearInterval(timer);
            timer = 0;
        } else span_timer.innerHTML = --total;
    }, 1000);
})();

    
</script>csdn的登陆倒计时js