在jqGrid中设置multiselect: true可以实现全选的操作，但怎么设置被选中的checkbox里面的值呢，做法如下：
jQuery("#listTable").jqGrid({
   url: 'queryList.do',
   datatype: 'json',
   colNames: ['','编号','姓名'],
   colModel: [
               { 
                 name: 'MY_ID',
                 index: 'MY_ID',
                 sortable: false,
                 width: '0%',
                 hidden:true
               },
               {
                 name: 'MY_NO',
                 index:'MY_NO',
                 sortable: false,
                 align:'center',
                 width:'10%'
               },
              {
                 name: 'NAME',
                 index:'NAME',
                 sortable: false,
                 align:'center',
                 width:'10%'
              }
            ],
            page: 1,
            rowNum: 10,
            rowList: [10, 20, 30],
            pager: '#listPage',
           &nb