bicyclesonthemoon.info Git - ott/bsta/blob - timer.js

   1 // timer.js
   2 //  3.07.2017
   3 //
   4 // The countdown script.
   5 //
   6 //    Copyright (C) 2017  Balthasar Szczepański
   7 //
   8 //    This program is free software: you can redistribute it and/or modify
   9 //    it under the terms of the GNU Affero General Public License as
  10 //    published by the Free Software Foundation, either version 3 of the
  11 //    License, or (at your option) any later version.
  12 //
  13 //    This program is distributed in the hope that it will be useful,
  14 //    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 //    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 //    GNU Affero General Public License for more details.
  17 //
  18 //    You should have received a copy of the GNU Affero General Public License
  19 //    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20
  21 window.onload = function () {
  22         var ongh;
  23         var ongm;
  24         var ongs;
  25         var ongvh;
  26         var ongvm;
  27         var ongvs;
  28         var timer;
  29
  30         ongh = document.getElementById("ongh");
  31         ongm = document.getElementById("ongm");
  32         ongs = document.getElementById("ongs");
  33
  34         if(ongh == null || ongm == null || ongs == null) {
  35                 // window.alert("NUL");
  36         }
  37         else {
  38                 timer = setInterval (function() {
  39                         ongvh = +(ongh.innerHTML);
  40                         ongvm = +(ongm.innerHTML);
  41                         ongvs = +(ongs.innerHTML);
  42
  43                         if(isNaN(ongvh) || isNaN(ongvm) || isNaN(ongvs)) {
  44                                 // window.alert("NAN");
  45                                 clearInterval(timer);
  46                                 return;
  47                         }
  48
  49                         if(ongvs == 0) {
  50                                 ongvs = 59;
  51                                 if(ongvm == 0) {
  52                                         ongvm == 59;
  53                                         if(ongvh ==0) {
  54                                                 ongvm = 0;
  55                                                 ongvs = 0;
  56                                         }
  57                                         else {
  58                                                 ongvh -= 1;
  59                                         }
  60                                 }
  61                                 else {
  62                                         ongvm -= 1;
  63                                 }
  64                         }
  65                         else {
  66                                 ongvs -= 1;
  67                         }
  68
  69                         if(ongvh == 0 && ongvm == 0 && ongvs == 0) {
  70                                 ongh.innerHTML = "00";
  71                                 ongm.innerHTML = "00";
  72                                 ongs.innerHTML = "NG";
  73                                 // window.alert("ONG");
  74                                 clearInterval(timer);
  75                                 return;
  76                         }
  77                         else {
  78                                 ongh.innerHTML = ((ongvh<10)?"0":"")+ongvh;
  79                                 ongm.innerHTML = ((ongvm<10)?"0":"")+ongvm;
  80                                 ongs.innerHTML = ((ongvs<10)?"0":"")+ongvs;
  81                         }
  82
  83                 }, 1000);
  84         }
  85 };