jQuery联动日历的实例解析

//点击更新前一个月
 $(".pre").live("click",function(){
  nowTitleDateM--;
  if(nowTitleDateM == 11){
    nowLastM = nowTitleDateM-1
    nextTitleDateY--
    nextTitleDateM = nowTitleDateM+1
    nextLastM = 1
  }else if(nowTitleDateM == 0){
    nowTitleDateY--
    nowTitleDateM = 12;
    nowLastM = nowTitleDateM-1;
    nextTitleDateM = 1;
    nextLastM = nextTitleDateM+1
  }else if(nowTitleDateM == 1){
    nowLastM = 12;
    nextTitleDateM = nowTitleDateM+1
    nextLastM = nextTitleDateM+1
  }else{
    nowLastM = nowTitleDateM-1
    nextTitleDateM = nowTitleDateM+1
    nextLastM = nextTitleDateM+1
  }  
  //天数和存放位置
  update(); 
  //插入到日期数的TD当中     
  insertTd();  
  //更新日期标题
  updateTitle();
 })
 //点击下一个月
$(".next").live("click",function(){
 nowTitleDateM++;
 if(nowTitleDateM == 12){
   nowLastM = nowTitleDateM-1
   nextTitleDateY++
   nextTitleDateM = 1
   nextLastM = nextTitleDateM+1
 }else if(nowTitleDateM == 11){
   nowLastM = nowTitleDateM-1
   nextTitleDateM = nowTitleDateM+1
   nextLastM = 1
 }else if(nowTitleDateM == 13){
   nowTitleDateY++
   nowTitleDateM = 1;
   nowLastM = 12;
   nextTitleDateM = nowTitleDateM+1;
   nextLastM = nextTitleDateM+1
 }else if(nowTitleDateM == 1){
   nowLastM = 12;
   nextTitleDateM = nowTitleDateM+1
   nextLastM = nextTitleDateM+1
 }else{
   nowLastM = nowTitleDateM-1
   nextTitleDateM = nowTitleDateM+1
   nextLastM = nextTitleDateM+1
 }   
  //天数和存放位置
  update(); 
  //插入到日期数的TD当中     
  insertTd();
  //更新日期标题
  updateTitle();
 })