js實現倒計時，精確到秒
阿新 • • 發佈：2018-11-09
效果圖：
html程式碼：
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> <meta name="viewport" content="width=device-width, initial-scale=1,maximum-scale=1,user-scalable=no"> <meta name="apple-mobile-web-app-capable" content="yes"><meta name="format-detection" content="telephone=no" /> <meta name="apple-mobile-web-app-status-bar-style" content="black"> <link rel="stylesheet" type="text/css" href="css/common.css"/> <link rel="stylesheet" type="text/css" href="css/holidayCountdown.css"/> </head> <body> <h1>距離國慶節還剩</h1> <strong class="cuntDownBox"> <strong class="day">0天</strong> <strong class="hour">0時</strong> <strong class="minute">0分</strong> <strong class="second">0秒</strong> <strong class="haomiao">0毫秒</strong> </div> <div class="zhufu"> <p>祝願大家國慶快樂！</p> <p style="padding-top: 10px;">2018我們同在！</p> </div> </body> </html> <script type="text/javascript" src="js/jquery-1.11.3.js"></script> <script type="text/javascript" src="js/holidayCountdown.js"></script>
js程式碼：
function countDown() { var EndTime = new Date('2018/9/30 17:30:00'); var NowTime = new Date(); var t = EndTime.getTime() - NowTime.getTime(); var d=0; var h=0; var m=0; var s=0; var mms=0; if(t>=0){ d=Math.floor((t/1000/3600)/24);//計算天數 h=Math.floor((t/1000/3600)%24);//計算小時 m=Math.floor((t/1000/60)%60);//計算分 s=Math.floor(t/1000%60);//計算秒 mms=Math.floor(t%1000);//計算毫秒 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(mms>=0 && mms<=100){ mms="0"+1; }else if(mms>=100 && mms<=200){ mms="0"+2; }else if(mms>=200 && mms<=300){ mms="0"+3; }else if(mms>=300 && mms<=400){ mms="0"+4; }else if(mms>=400 && mms<=500){ mms="0"+5; }else if(mms>=500 && mms<=600){ mms="0"+6; }else if(mms>=600 && mms<=700){ mms="0"+7; }else if(mms>=700 && mms<=800){ mms="0"+8; }else if(mms>=800 && mms<=900){ mms="0"+9; }else if(mms>=900 && mms<=1000){ mms="0"+0; }else{ mms="0"+0; } $(".day").html(d+"天"); $(".hour").html(h+"時"); $(".minute").html(m+"分"); $(".second").html(s+"秒"); $(".haomiao").html(mms+"毫秒"); } } setInterval(countDown,0);