Jquery 动态发送Ajax请求，接受Jason格式的数据

Jason数据格式：

[{"title":"本市公布2011学年主要教育收费项目与收费标准","totalnum":"6","link":"/zwgk/tzggzwgk/czywgg/201108/t20110830_128689.html","date":"2011.08.30 17:04:00"},{"title":"关于申请设立上海瑞通会计师事务所的公示（截止）","totalnum":"6","link":"/zwgk/tzggzwgk/czywgg/201108/t20110831_128695.html","date":"2011.08.31 16:14:00"},{"title":"上海市市级财政专项资金评审专家库拟聘专家（第一批）公示（截止）","totalnum":"6","link":"/zwgk/tzggzwgk/czywgg/201109/t20110914_128746.html","date":"2011.09.14 15:19:00"},{"title":"关于申请设立上海志德会计师事务所的公示（截止）","totalnum":"6","link":"/zwgk/tzggzwgk/czywgg/201109/t20110906_128721.html","date":"2011.09.06 15:29:00"},{"title":"关于申请设立上海禾心会计师事务所的公示（截止）","totalnum":"6","link":"/zwgk/tzggzwgk/czywgg/201109/t20110906_128722.html","date":"2011.09.06 15:37:00"},{"title":"会计师事务所高新技术企业认定专项审计资质名单（2008年—2011年）","totalnum":"6","link":"/zwgk/tzggzwgk/czywgg/201108/t20110804_128427.html","date":"2011.08.31 16:04:00"}]

前台处理方法：
  $.post("<%=basePath%>gxh/gxh001_wasStarch.do",{"type":2434,"start":start,"num":num},function(data){
      var htmlstr = "";
      var datalength = 0;
      
      for(var i = 0 ; i<20 && data != null && i<data.length; i++){
       var title = data[i].title;
       var subtitle = title.length > 50 ? title.substring(0,50)+"...": title;
       var date = data[i].date.substring(5,10);
       datalength = data[i].totalnum;
       htmlstr += "<li><div class='newsTitle'><a href='"+data[i].link+"' title='"+title+"' target='_blank'>"+subtitle+"</a></div><div class='newsDate'>["+date+"]</div></li>";
      }
      
      $("#count").val( datalength );
      $("#gg").html(htmlstr);  
      $("#pageCount").val(pageCount);
      var count = $("#count").val();
      var page_div = " 共 "+ pageCount +" 页 " + count + " 条 第  " + currentPage.value + " 页    ";
      $("#page_div").html("<span> "+ page_div +" </span>");
      },"json");