js倒計時|天時分秒| countTime
阿新 • • 發佈：2020-08-02
js
const endTimeObj = new Date("2020-5-1"); function countTime() { //時間差 var leftTime = endTimeObj - new Date(); //定義變數 d,h,m,s儲存倒計時的時間 var d, h, m, s; if (leftTime < 0) { return; } d = Math.floor(leftTime / 1000 / 60 / 60 / 24); h = Math.floor((leftTime / 1000 / 60 / 60) % 24); m = Math.floor((leftTime / 1000/ 60) % 60); s = Math.floor((leftTime / 1000) % 60); const str = `${d}天${h}時${m}分${s}秒`; setTimeout(countTime, 1000); console.log(str); //將倒計時賦值到div中 //遞迴每秒呼叫countTime方法，顯示動態時間效果 } countTime();
html
<!DOCTYPE html> <html lang="en"> <head> <title>倒計時</title> </head> <body> <script type="text/javascript"> const endTimeObj = new Date("2020-5-1"); function countTime() { //時間差 var leftTime = endTimeObj - new Date(); //定義變數 d,h,m,s儲存倒計時的時間 var d, h, m, s; if (leftTime < 0) { return; } d = Math.floor(leftTime / 1000 / 60/ 60 / 24); h = Math.floor((leftTime / 1000 / 60 / 60) % 24); m = Math.floor((leftTime / 1000 / 60) % 60); s = Math.floor((leftTime / 1000) % 60); const str = `${d}天${h}時${m}分${s}秒`; setTimeout(countTime, 1000); console.log(str); //將倒計時賦值到div中 //遞迴每秒呼叫countTime方法，顯示動態時間效果 } countTime(); </script> </body> </html>