*****略*****

columns:[[

    {field:'id',checkbox:true},

    {field:'mDate',width:10,title:'菜单日期',align:'left'},

    {field:'mealtime',width:10,title:'餐次',align:'left'},

    {field:'_id_',title:'操作',width:20,align:'center',formatter:function(val,row,index){

        if(isAllowEdit(row.mDate)){//是否允许编译

            return '<div class="opreation"><a href="javascript:$(\'#dg_menu\').treegrid(\'select\',\''+row.id+'\');doEdit(\''+row.id+'\');"><img src="./img/edit.gif" style="vertical-align:middle;"/> 修改</a> </div> ';

        }else{

            /* 删除修改按钮

            * return '<div class="opreation"></div> ';

            */

            return '<div class="opreation"><a href="javascript:void(0)" style="color:grey"><img src="./img/edit.gif" style="vertical-align:middle;"/> 修改</a></div> ';

        }

    }}

]]

//根据日期判断是否可修改

function isAllowEdit(date){

    var flag;

    var date = new Date(date);//传来的时间

    var currentDate=new Date();//当前时间

    if(date<currentDate){

        flag = false;

    }else{

        flag = true;

    }

    return flag;

}