table表单全选

//全选表单代码不全，仅关键信息

<table cellpadding="3" class="data-grid">

   <thead>

   <tr>

   <th><input type="checkbox" id ="checkAll" name = "checkAll" /></th>

<tbody>

    <% if (listCRExtendMsg != null && listCRExtendMsg.size() > 0) { %>

         <%

            int index = 0;

             for (CRExtendMsg data : listCRExtendMsg) { %>

     <tr>

     <td><input type="checkbox" name="checkItem" value="<%=data.getId()%>"/></td>

//js代码

//勾选复选框

$(function(){

          var $thr = $('table thead tr');      //这是获取表头的复选框

          var $tbr = $('tbody tr td');

          var $checkAll = $thr.find('input');

          

          $checkAll.click(function(event){ 

              /*将所有行的选中状态设成全选框的选中状态*/ 

              $tbr.find('input').prop('checked',$(this).prop('checked')); 

              /*阻止向上冒泡，以防再次触发点击操作*/ 

              event.stopPropagation(); 

          }); 

     

    });

//前台勾选数据后的触发按钮

function batchCloseList() {

          var nodes = $('tbody tr td input:checked'); //获取所有复选框选中的项作为一个对象

          var ids = new Array();  //创建一个接收id的数组

          $.each(nodes,function(i){    //遍历所选的对象

              if ($(nodes[i]).val() != 'on') { //'on'是表头数据也就是全选的复选框

                   ids.push($(nodes[i]).val());  //将每一个选中对象的值赋给接收id的数组

              }

          });

          if (ids.length !=0) {

              if(confirm("是否将  "+ ids.length +"  条数据关闭推广？")){

               var param = {selectedItem : ids};

                  $.post('<%=path%>/chatRoom/closeExtend.htm', param, function(data){

                     if (data.code == 0) {

                             window.location.reload();

                        } else {

                             layer.alert(data.msg);

                   }

                  }, 'json');

              }

          }

    }

//前台传值为数组，后台转为list接收

@ResponseBody

@RequestMapping(value = "/closeExtend")

public Map<String, Object> closeExtend(@RequestParam(value = "selectedItem[]", required = false) List<String> selectedItem, HttpServletRequest request, ModelMap model) {

      Map<String, Object> data = Constants.newReturnMap(0);

      String isOpenExtend = "0";

      Boolean success = chatRoomService.closeExtend(selectedItem, isOpenExtend);

      if (!success) {

         data.put("code", -1);

         data.put("msg", "修改失败！");

      }

      return data;

}