JavaScript melaksanakan kemahiran hitung detik_javascript digital yang mudah-tutorial js-php.cn

Berikut ialah kaedah untuk memaparkan kiraan detik dalam JavaScript Ia berkurangan daripada 10 saat ke penghujung kiraan (iaitu 0 kod adalah seperti berikut:

runCount(10);
function runCount(t){
  if(t>0){
    document.getElementById(‘shownum').innerHTML = t;
    t–;
    setTimeout(function(){runCount(t);},1000);
  }else{
    document.getElementById(‘shownum').innerHTML = ‘倒计时结束！';
  }
}

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Sebelum menjalankan kod js, anda perlu menambah div dengan ID yang ditunjukkan.

js melaksanakan fungsi kira detik dinamik * a ialah cap masa yang diterima daripada latar belakang, yang perlu ditukar kepada milisaat

<div>
  距明年还有:
  <span id='daya'></span>天
  <span id='hoursa'></span>小时
  <span id='minua'></span>分
  <span id='secoa'></span>秒
</div>
<script type="text/javascript">
/**
*
*  copyright WE 2012.7
*  js实现动态倒计时功能
*  a是从后台接收到的时间戳，需转换成毫秒单位
*
*/
  var a=12345678;     //以毫秒为单位
  function fomtime()
  {
    a=a-1000;
    var b=new Date();
    b.setTime(0);
    var c=new Date();
    c.setTime(a);
    var day1=b.getDate();    //为方便调用，把天数、小时等单独定义
    var hours1=b.getHours();
    var minu1=b.getMinutes();
    var seco1=b.getSeconds();
    var day2=c.getDate();
    var hours2=c.getHours();
    var minu2=c.getMinutes();
    var seco2=c.getSeconds();
    var day=day2-day1;
    var hours=hours2-hours1;
    var minu=minu2-minu1;
    var seco=seco2-seco1;
    document.getElementById('daya').innerHTML=day;
    document.getElementById('hoursa').innerHTML=hours;
    document.getElementById('minua').innerHTML=minu;
    document.getElementById('secoa').innerHTML=seco;
    setTimeout("fomtime()",1000);
  }
  fomtime();
</script>

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Undur mengikut hari

Kod HTML 1:

<Script Language="JavaScript">  
<!-- Begin  
 var timedate= new Date("January 14,2006");  
 var times="研究生考试";  
 var now = new Date();  
 var date = timedate.getTime() - now.getTime();  
 var time = Math.floor(date / (1000 * 60 * 60 * 24));  
 if (time >= 0) ; 
 document.write("<li><font color=#DEDBDE>现在离2006年"+times+"还有: <font color=#ffffff><b>"+time +"</b></font> 天</font></li>"); 
// End --> 
</Script>

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Kod HTML 2:

<script language="JavaScript" type="text/javascript"> 
function djs(){ 
 var urodz= new Date("11/12/2008"); 
 var now = new Date(); 
 var num 
 var ile = urodz.getTime() - now.getTime(); 
 var dni = Math.floor(ile / (1000 * 60 * 60 * 24)); 
 if (dni >1)num=dni+1
 else if (dni == 1)num=2 
 else if (dni == 0)num=1
 else num=0 
 document.write(num) 
} 
</script>

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Masih ada [] hari lagi sehingga majlis perasmian XX
Kod kira detik JavaScript tepat hingga saat

Kod HTML:

<form name="form1"> 
<div align="center" align="center"> 
<center>离2013年还有:<br> 
<input type="textarea" name="left" size="35" style="text-align: center"> 
</center> 
</div> 
</form> 
<script LANGUAGE="javascript"> 
 startclock() 
 var timerID = null; 
 var timerRunning = false; 
 function showtime() { 
  Today = new Date(); 
  var NowHour = Today.getHours(); 
  var NowMinute = Today.getMinutes(); 
  var NowMonth = Today.getMonth(); 
  var NowDate = Today.getDate(); 
  var NowYear = Today.getYear(); 
  var NowSecond = Today.getSeconds(); 
  if (NowYear <2000) 
  NowYear=1900+NowYear; 
  Today = null; 
  Hourleft = 23 - NowHour 
  Minuteleft = 59 - NowMinute 
  Secondleft = 59 - NowSecond 
  Yearleft = 2009 - NowYear 
  Monthleft = 12 - NowMonth - 1
  Dateleft = 31 - NowDate 
  if (Secondleft<0) 
  { 
   Secondleft=60+Secondleft; 
   Minuteleft=Minuteleft-1; 
  } 
  if (Minuteleft<0) 
  {  
   Minuteleft=60+Minuteleft; 
   Hourleft=Hourleft-1; 
  } 
  if (Hourleft<0) 
  { 
   Hourleft=24+Hourleft; 
   Dateleft=Dateleft-1; 
  } 
  if (Dateleft<0) 
  { 
   Dateleft=31+Dateleft; 
   Monthleft=Monthleft-1; 
  } 
  if (Monthleft<0) 
  { 
   Monthleft=12+Monthleft; 
   Yearleft=Yearleft-1; 
  } 
  Temp=Yearleft+'年, '+Monthleft+'月, '+Dateleft+'天, '+Hourleft+'小时, '+Minuteleft+'分, '+Secondleft+'秒'
  document.form1.left.value=Temp; 
  timerID = setTimeout("showtime()",1000); 
  timerRunning = true; 
 } 
 var timerID = null; 
 var timerRunning = false; 
 function stopclock () { 
  if(timerRunning) 
   clearTimeout(timerID); 
  timerRunning = false; 
 } 
 function startclock () { 
  stopclock(); 
  showtime(); 
 } 
// --> 
</script>

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Perjumpaan sukan tertentu, mendorong peringkat yang berbeza mengikut masa

Kod HTML:

<!--倒计时Javascript begin--> 
<script language="JavaScript"> 
<!--  
function DigitalTime1() 
{  
 var deadline= new Date("08/13/2007") //开幕倒计时 
 var symbol="8月13日"
 var now = new Date() 
 var diff = -480 - now.getTimezoneOffset() //是北京时间和当地时间的时间差 
 var leave = (deadline.getTime() - now.getTime()) + diff*60000
 var day = Math.floor(leave / (1000 * 60 * 60 * 24)) 
 var hour = Math.floor(leave / (1000*3600)) - (day * 24) 
 var minute = Math.floor(leave / (1000*60)) - (day * 24 *60) - (hour * 60) 
 var second = Math.floor(leave / (1000)) - (day * 24 *60*60) - (hour * 60 * 60) - (minute*60) 

 var deadline_2= new Date("08/13/2004") //开幕后计时 
 var symbol_2="8月13日"
 var now_2 = new Date() 
 var diff_2 = -480 - now.getTimezoneOffset() //是北京时间和当地时间的时间差 
 var leave_2 = (now_2.getTime() - deadline_2.getTime()) + diff_2*60000
 var day_2 = Math.floor(leave_2 / (1000 * 60 * 60 * 24)) 
 var hour_2 = Math.floor(leave_2 / (1000*3600)) - (day_2 * 24) 
 var minute_2 = Math.floor(leave_2 / (1000*60)) - (day_2 * 24 *60) - (hour_2 * 60) 
 var second_2 = Math.floor(leave_2 / (1000)) - (day_2 * 24 *60*60) - (hour_2 * 60 * 60) - (minute_2*60) 

 day=day+1; 
 day_2=day_2+1; 

 if (day>0) //还未开幕 
 { 
  //LiveClock1.innerHTML = "现在"+symbol+"天" 
  LiveClock1.innerHTML = "<font
  setTimeout("DigitalTime1()",1000) 
 } 

 if (day<0) //已经开幕 
 { 
  //LiveClock1.innerHTML = "现在离"+symbol+"还有"+day+"天"+hour+"小时"+minute+"分"+second +"秒" 
  LiveClock1.innerHTML = "<font
  setTimeout("DigitalTime1()",1000) 
 } 

 if (day==0) //正在开幕 
 { 
  //LiveClock1.innerHTML = "现在"+symbol+"天" 
  LiveClock1.innerHTML = "<font
  setTimeout("DigitalTime1()",1000) 
 } 

 if (day<0 & day_2>19) //某某运动会结束 
 { 
  //LiveClock1.innerHTML = "现在离"+symbol+"还有"+day+"天"+hour+"小时"+minute+"分"+second +"秒" 
  LiveClock1.innerHTML = "<font
  setTimeout("DigitalTime1()",1000) 
 } 

} 
// --> 
</script> 
<!--倒计时Javascript end--> 
<body onload=DigitalTime1()> 
<div id= LiveClock1></div> 

</body>

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Undur mengikut jam

Kod HTML:

<SCRIPT LANGUAGE="JavaScript"> 
<!-- 
var maxtime = 60*60 //一个小时，按秒计算，自己调整! 
function CountDown(){ 
 if(maxtime>=0){ 
  minutes = Math.floor(maxtime/60); 
  seconds = Math.floor(maxtime%60); 
  msg = "距离结束还有"+minutes+"分"+seconds+"秒"; 
  document.all["timer"].innerHTML=msg; 
  if(maxtime == 5*60) 
   alert('注意，还有5分钟!'); 
  --maxtime; 
 } 
 else{ 
  clearInterval(timer); 
  alert("时间到，结束!"); 
 } 
} 
timer = setInterval("CountDown()",1000); 
//--> 
</SCRIPT> 
<div id="timer" style="color:red"></div>

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Pemasa kira detik Javascript - menggunakan pengesahan kendiri masa sistem

Kali ini, masa sistem digunakan untuk menyemak sendiri kira detik tanpa pelarasan manual untuk menjadikan kira detik lebih tepat Kod dan ulasan terperinci adalah seperti berikut:

<span id="clock">00:01:11:00</span> 
<input id="startB" type="button" value="start countdown!" onclick="run()"> 
<input id="endB" type="button" value="stop countdown!" onclick="stop()"> 
<br> 
<input id="diff" type="text"> 
<input id="next" type="text"> 
<script language="Javascript"> 
var normalelapse = 100; 
var nextelapse = normalelapse; 
var counter;  
var startTime; 
var start = clock.innerText;  
var finish = "00:00:00:00"; 
var timer = null; 

// 开始运行 
function run() { 
 startB.disabled = true; 
 endB.disabled = false; 
 counter = 0; 
 // 初始化开始时间 
 startTime = new Date().valueOf(); 

 // nextelapse是定时时间, 初始时为100毫秒 
 // 注意setInterval函数: 时间逝去nextelapse(毫秒)后, onTimer才开始执行 
 timer = window.setInterval("onTimer()", nextelapse);  
} 

// 停止运行 
function stop() { 
 startB.disabled = false; 
 endB.disabled = true; 
 window.clearTimeout(timer); 
} 

window.onload = function() { 
 endB.disabled = true; 
};

// 倒计时函数 
function onTimer() 
{ 
 if (start == finish) 
 { 
  window.clearInterval(timer); 
  alert("time is up!"); 
  return; 
 } 

 var hms = new String(start).split(":"); 
 var ms = new Number(hms[3]); 
 var s = new Number(hms[2]); 
 var m = new Number(hms[1]); 
 var h = new Number(hms[0]); 

 ms -= 10; 
 if (ms < 0) 
 { 
  ms = 90; 
  s -= 1; 
  if (s < 0) 
  { 
    s = 59; 
    m -= 1; 
  } 

  if (m < 0) 
  { 
    m = 59; 
    h -= 1; 
  } 
 } 

 var ms = ms < 10 &#63; ("0" + ms) : ms; 
 var ss = s < 10 &#63; ("0" + s) : s; 
 var sm = m < 10 &#63; ("0" + m) : m; 
 var sh = h < 10 &#63; ("0" + h) : h; 

 start = sh + ":" + sm + ":" + ss + ":" + ms; 
 clock.innerText = start; 

 // 清除上一次的定时器 
 window.clearInterval(timer); 

 // 自校验系统时间得到时间差, 并由此得到下次所启动的新定时器的时间nextelapse 
 counter++;  
 var counterSecs = counter * 100; 
 var elapseSecs = new Date().valueOf() - startTime; 
 var diffSecs = counterSecs - elapseSecs; 
 nextelapse = normalelapse + diffSecs; 
 diff.value = counterSecs + "-" + elapseSecs + "=" + diffSecs; 
 next.value = "nextelapse = " + nextelapse; 
 if (nextelapse < 0) nextelapse = 0; 

 // 启动新的定时器 
 timer = window.setInterval("onTimer()", nextelapse);  
} 
</script>

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