JavaScript code mean, the middle has not yet acquired the Date "write a timer function What does this mean?

1  // Time zone 
2 $ (Document) .ready ( function () {
 . 3      the setInterval (the showTime, 1000 );
 . 4      function Timer (obj, TXT) {???
 . 5          obj.text (TXT); ???
 . 6      }
 . 7      function the showTime () {
 . 8          var Today = new new a Date ();
 . 9          var WEEKDAY = new new the Array (. 7 )
 10          WEEKDAY [0] = "Monday"
 . 11          WEEKDAY [. 1] = "Tuesday"
 12 is          WEEKDAY [2] = " Wednesday "
 13         weekday[3]="星期四"
14         weekday[4]="星期五"
15         weekday[5]="星期六"
16         weekday[6]="星期日"
17         var y=today.getFullYear()+"年";
18         var month=today.getMonth()+1+"月";
19         var td=today.getDate()+"日";
20         var d=weekday[today.getDay()-1];
21         var h=today.getHours();
22         var m=today.getMinutes();
23         var s=today.getSeconds();
24         if(h<10){
25             H = "0" + H;
 26 is          }
 27          IF (m <10 ) {
 28              m = "0" + m;
 29          }
 30          Timer ($ ( "# the Y" ), Y); these lines is what is meant, there timer function specifically what role?
31 is          Timer ($ ( "# MH" ), month The);
 32          Timer ($ ( "# the TD" ), TD);
 33 is          Timer ($ ( "# D" ), D);
 34 is          Timer ($ ( "# H " ), H);
 35          Timer ($ (" m # " ), m);
 36          Timer ($ (" # S " ), S);