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[Java教程]JavaScript电子时钟+倒计时


JavaScript时间类

     获取时分秒:
         getHours()
         getMinutes();
         getSeconds();
      获取年月日:
         getFullYear();
         getMonth() + 1;//获取的月份需要+1;
         getDate(); //日期
         getDay(); //获取的是星期,0--》星期天
     实例:(效果图)
                         
           
<!DOCTYPE html><html lang="en"><head>  <meta charset="UTF-8">  <title>电子时钟</title>  <style type="text/css">  *{    margin: 0;    padding: 0;  }   #wrap{     width: 200px;     height: 100px;     background-color: black;   }   #time{     color: #fff;     display: block;     font-size: 24px;     margin: 0 auto;     padding-top: 20px;     /*border: 1px solid red;*/     text-align: center;     width: 100px;   }   #timer{     color: green;     display: block;     font-size: 18px;     margin: 0 auto;     padding-top: 10px;     /*border: 1px solid red;*/     text-align: center;     /*width: 100px;*/   }  </style></head><body>    <div id="wrap">      <span id="time"></span>     <span id="timer"></span>    </div>   <script type="text/javascript">    var time =document.getElementById("time");    var timer =document.getElementById("timer");    setInterval(function() {    var date = new Date();    var hours = date.getHours();    var minutes = date.getMinutes();    var seconds = date.getSeconds();      var years = date.getYear();    var dates = date.getDate();    var monts = date.getMonth()+1;   var day = date.getDay();    var parses = date.getMilliseconds()%60;   switch(day){     case 0:     day="日";      case 1:     day="一";      case 2:     day="二";      case 3:     day="三";      case 4:     day="四";      case 5:     day="五";      case 6:     day="六";   }    //如果秒数小于十,在秒数面前连接一个0    if(seconds < 10) {      seconds = "0" + seconds;    }    //如果分钟数小于十,在分钟数面前连接一个0    if(minutes < 10) {      minutes = "0" + minutes;    }    //如果小时数小于十,在小说数面前连接一个0    if(hours < 10) {      hours = "0" + hours;    }    if(years<1900) {      years = years+1900;    }    if(dates<10) {      dates = "0" + dates;    }    if(monts<10) {      monts = "0" + monts;    }    if(parses<10) {      // parses = "0" + parses;    }        timer.innerHTML = years +"年" +monts+ "月" +dates +"号"+"星期"+day;      time.innerHTML = hours + ":" + minutes + ":" + seconds + ":" + parses;    // date.getTime()//返回的是一个从1970年到当前的毫秒数(时间戳)(ms)    // date.getMonth()//返回的是月份,从0开始算    // date.getFullYear();      },10)   </script></body></html>

 

2.倒计时

                

 <!doctype html> <html> <meta charset="utf-8"> <title>倒计时</title><head>   <style type="text/css">   *{     margin: 0;     padding: 0;   }    .wrap{      width: 350px;      height: 100px;      background-color: black;    }    #dates{      color: #fff;      margin-top: 10px;      display: block;      margin-left: 15px;    }    p{      color: #fff;    }   </style></head> <body> <div class="wrap">  <p>距离2016年02月08号00时00分00秒春节倒计时:</p>  <!-- <p>距离2016年01月07号23时59分59秒倒计时:</p> -->  <span id="dates"></span></div><script type="text/javascript"> var dates = document.getElementById("dates");function getRTime(){ var EndTime= new Date('2016/02/07 23:59:59'); //截止时间 var NowTime = new Date(); var t =EndTime.getTime() - NowTime.getTime(); var d=Math.floor(t/1000/60/60/24); var h=Math.floor(t/1000/60/60%24); var m=Math.floor(t/1000/60%60); var s=Math.floor(t/1000%60); var p=Math.floor(t%60);if(d<10){  d="0"+d;}if(h<10){  h="0"+h;}if(m<10){  m="0"+m;}if(s<10){  s="0"+s;}if(p<10){  p="0"+p;}dates.innerHTML=d+ "日" + h + "小时"+ m +"分" + s +"秒"+p+"毫秒";} setInterval(getRTime,1); </script> </body> </html>