jquery easyui datagrid的增加，修改，删除

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<link rel="stylesheet" type="text/css" href="../../script/themes/default/easyui.css" />      <link rel="stylesheet" type="text/css" href="../../script/themes/icon.css" />      <script type="text/javascript" style="max-width: 100%;height: auto;width: auto\9;" src="http://www.reader8.com/script/jquery-1.4.2.min.js" </script>      <script type="text/javascript" style="max-width: 100%;height: auto;width: auto\9;" src="http://www.reader8.com/script/jquery.easyui.min.js" </script>      <script type="text/javascript" style="max-width: 100%;height: auto;width: auto\9;" src="http://www.reader8.com/script/locale/easyui-lang-zh_CN.js" mce_src="script/locale/easyui-lang-zh_CN.js"></script>  

js:

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<script type="text/javascript"><!--          $(function(){              $('#tt').datagrid({                  width:810,                  height:400,                  idField:'xsbh',                  url:'studentHandler.ashx',                  singleSelect:true,                  columns:[[                     {field:'xsbh',title:'编号',width:80},                    {field:'UserName',title:'姓名',width:100},                    {field:'Sex',title:'性别',width:30},                    {field:'SchoolYear',title:'年份',width:50},                    {field:'opt',title:'操作',width:100,align:'center',                      formatter:function(value,rec,index){                          var s = '<a href="#" mce_href="#" onclick="view(\''+ rec.xsbh + '\')">查看</a> ';                          var e = '<a href="#" mce_href="#" onclick="edit(\''+ rec.xsbh + '\')">编辑</a> ';                          var d = '<a href="#" mce_href="#" onclick="del(\''+ index +'\')">删除</a> ';                          return s+e+d;                      }                    }                  ]],                  toolbar:[{                      text:'增加',iconCls:'icon-add',handler:function(){                          window.location.href='StuAdd.aspx';                      }                  },                  {text:'导入',iconCls:'icon-add',handler:function(){                      window.location.href='StuImport.aspx'                      }                  },                  {text:'查找',iconCls:'icon-search'}                  ],                 pagination:true              });          })                      function view(bh)  //转到查看页面              {                  window.location.href='StuView.aspx?id='+bh+'&page=stu';  //              var row = $('#tt').datagrid('getSelected');  //               if(row)  //               {  //                  alert(row.xsbh);  //               }              }            function edit(bh)  //转到编辑页面            {                  window.location.href='StuEdit.aspx?id='+bh;            }                        function del(index){  //删除操作              $.messager.confirm('确认','确认删除?',function(row){                  if(row){                      var selectedRow = $('#tt').datagrid('getSelected');  //获取选中行                      $.ajax({                          url:'delHandler.ashx?id='+selectedRow.xsbh+'&type=stu',    //加了个type，作用是以后不管什么删除，都可以转到这个ashx中处理                          success:function(){alert('删除成功');}                      });                      $('#tt').datagrid('deleteRow',index);                  }              })            }        // --></script>