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js獲取當前時間并每秒刷新一次

時間:2016-10-18 15:38:57 類型:JS/JQUERY
字號:    

Eg: 結(jié)果顯示:2016/10/18 15:31:20

<!DOCTYPE html>
<html>
        <head>
             <meta charset="UTF-8">
             <title>www.guvo98.cn</title>
        </head>
        <body>
             <div id="yt"></div>
        </body>
</html>
<script>
         //創(chuàng)建dtime()函數(shù)獲取當前時間
         function dtime(){
                 var dt = new Date();//實例化Date對象
                 var y = dt.getFullYear();//年
                 var m = dt.getMonth();//月
                 var d = dt.getDate();//日
                 var h = dt.getHours();//時
                 var i = dt.getMinutes();//分
                 var s = dt.getSeconds();//秒
                 var ntime = y+"/"+fn((m+1))+"/"+fn(d)+" "+fn(h)+":"+fn(i)+":"+fn(s);
                 var yt = document.getElementById("yt");
                 yt.innerHTML = ntime;
         }
         //當某個參數(shù)不是兩位數(shù)時補0
         function fn(str){
              var num;
              str > 9 ? num = str : num = "0"+str;
              return num;
         }
         //初始化
         window.onload=function(){
              //定時器每秒調(diào)用一次dtime()
              setInterval(function(){
                   dtime();
             },1000);
         }
</script>