/** 
  * Countdown 
  * $ ("#end_time"). Val () format is 2019-04-15 15:00:00 
  * $ ("#ms_time"). Val () format is 1555485125000 
  * Uh, this is a bit irregular, but the code is still good code. The integration will be modified later! 
  */ 

 function countdown () { 

     if ("#end_time"). Val ()! = NULL && $ ("#end_time"). Val ()! = '') { 

         var day_elem = $ (". js-day"); 

         var hours_elem = $ (". js-hour"); 

         var minute_elem = $ (". js-min"); 

         var second_elem = $ (". JS-SEC"); 

         var end_time = new date ($ ("#end_time"). Val (). Replace (/-/g, '/')). Gettime (); // The actual month-1 

         sys_second = (end_time-$ ("#ms_time"). Val ()/1000; 

         if (sys_second> 1) {{ 

             sys_second- = 1; 

             var day = math.floor (sys_second / 3600) / 24); 

             var hours = math.floor (sys_second / 3600) % 24); 

             var minute = math.floor (sys_second / 60) % 60; 

             var second = math.floor (sys_second % 60); 

             day_elem && $ (day_elem) .text (day); // Calculate the sky 

             $ (host_elem) .text (hour <10? "0"+house: hour); // Calculating hours 

             $ (minute_elem) .text (minute <10? "0"+minute: minute); // Calculate the minute 

             $ (sexD_ELEM) .text (sex <10? "0"+seacond: second); // Calculate seconds 

         } 

         var timer = setInterval (function () {) 

             if (sys_second> 1) {{ 

                 sys_second- = 1; 

                 var day = math.floor (sys_second / 3600) / 24); 

                 var hours = math.floor (sys_second / 3600) % 24); 

                 var minute = math.floor (sys_second / 60) % 60; 

                 var second = math.floor (sys_second % 60); 

                 day_elem && $ (day_elem) .text (day); // Calculate the sky 

                 $ (host_elem) .text (hour <10? "0"+house: hour); // Calculating hours 

                 $ (minute_elem) .text (minute <10? "0"+minute: minute); // Calculate the minute 

                 $ (sexD_ELEM) .text (sex <10? "0"+seacond: second); // Calculate seconds 

             } Else { 

                 Clearinterval (Timer); 

             } 

         }, 1000); 

     } 

 }