timechange.js

          Array.prototype.indexOf = function(target){
              for(var i = 0; i < this.length; i++){
                  if(this[i] === target){
                     return i;
                  }
              }
              return -1;
          }

          function timeChangeAmPm(data){
              var amArr = ['00', '01', '02', '03', '04', '05', '06', '07', '08', '09', '10', '11', '12', '24'];
              var timeArr = {
                  '00':'12',
                  '01':'01',
                  '02':'02',
                  '03':'03',
                  '04':'04',
                  '05':'05',
                  '06':'06',
                  '07':'07',
                  '08':'08',
                  '09':'09',
                  '10':'10',
                  '11':'11',
                  '12':'12',
                  '13':'01',
                  '14':'02',
                  '15':'03',
                  '16':'04',
                  '17':'05',
                  '18':'06',
                  '19':'07',
                  '20':'08',
                  '21':'09',
                  '22':'10',
                  '23':'11',
                  '24':'00'
              };

              var dataSp = data.split(" ");
              var date = dataSp[0];
              var time = dataSp[1];
              var timeSp = time.split(":");
              var hour = timeSp[0];
              var min = timeSp[1];

              // am/pm判定
              var apStr = "";
              if(amArr.indexOf(hour) >= 0){
                 apStr = "AM";
              } else {
                 apStr = "PM";
              }

              return date + " " + apStr + timeArr[hour] + ":" + min;
          }