js倒計時--天、時、分、秒， 到時間後自動停止
阿新 • • 發佈：2019-01-07
js倒計時–天、時、分、秒， 到時間後自動停止：
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>積分清零公告</title> <script language="javascript" type="text/javascript"> var timer = null; function leftTimer(date) { clearTimeout(timer); var leftTime = new Date(date).getTime() - new Date().getTime(); //計算剩餘的毫秒數 if (leftTime <= 0) leftTime = 0; var days = parseInt(leftTime / 1000 / 60 / 60 / 24, 10); //計算剩餘的天數 var hours = parseInt(leftTime / 1000 / 60 / 60 % 24, 10); //計算剩餘的小時 var minutes = parseInt(leftTime / 1000 / 60 % 60, 10);//計算剩餘的分鐘 var seconds = parseInt(leftTime / 1000 % 60, 10);//計算剩餘的秒數 days = paddingZero(days); hours = paddingZero(hours); minutes = paddingZero(minutes); seconds = paddingZero(seconds); document.getElementById("timer").innerHTML = `${days}天 ${hours}:${minutes}:${seconds}`; if (leftTime >= 0) { timer = setTimeout(`leftTimer('${date}')`, 1000); } } function paddingZero(i) { //將0-9的數字前面加上0，例1變為01 return i < 10 ? "0" + i : i; } </script> </head> <body onload="leftTimer('2018/10/31 15:53:50')"> <h2>剩餘時間:</h2> <div id="timer"></div> </body> </html>