如何在打开新增窗口时传递参数值

<a href="javascript:void(0)" data-toggle="topjui-menubutton" data-options="method:'openDialog',
    iconCls:'icon-edit',
    grid:{type:'datagrid', id:'welderDatagrid'},
    dialog:{
        id:'welderEditDialog',
        href:'${ctx}/welder/welderBasic/add',
        url:'${ctx}/welder/welderBasic/getDetailByUuid?uuid={uuid}',
        buttonsGroup:
        [
            {
                text:'提交流程',
                url:'${ctx}/welder/welderBasic/processUpdate',
                iconCls:'icon-save',
                handler:'ajaxForm',
                reload:[
                    {type:'datagrid', id:'workingDatagrid'},
                    {type:'datagrid', id:'degreeDatagrid'}
                ]
            },
            {
                text:'更新',
                url:'${ctx}/welder/welderBasic/update',
                iconCls:'icon-save',
                handler:'ajaxForm',
                reload:[
                    {type:'datagrid', id:'workingDatagrid'}
                ]
            }
        ]
    }">编辑</a>

<input  id="cmd" type="hidden" name="cmd" value="{'/j2-easyui-encalendar-portlet.encalendar/get-default-calendar-booking-by-date':{}}">
<input type="hidden" id="userId" name="userId" value="">
<input type="hidden" id="p_auth"  name="p_auth" value="">
<input type="hidden" id="locale"  name="locale" value="en_US">
<input type="hidden" id="dayTime"  name="dayTime" value="">