动态读取table里面的数据

$(document).ready(function (){
       var table=$("table").get(1);//获取table的值
       var msg="";
       $("tr",table).each(function(rowNum){
         msg+="第"+(rowNum+1)+"行:--";
         
         var cells=$("td",this).get();
         
         var cellsCount=$(cells).length;
         
         for(var i=0;i < cellsCount;i++){
         
           msg +="第"+(cells[i].cellIndex+1)+"列="+cells[i].innerHTML+" ";
           
         }
         msg+="\n";
       });
       alert(msg)
      });