easyui datagrid 拿到当前页数 与分页控件事件

var grid = $('#dg'); 
    var options = grid.datagrid('getPager').data("pagination").options; 
    var pageNumber = options.pageNumber; 
    var pageSize = options.pageSize; 
            var pg = $("#dg").datagrid("getPager");
            if(pg)
            {
                   $(pg).pagination({
                  onRefresh:function(pageNumber,pageSize){
                 getPagerOptions("${requestScope.basePath}reportAction!getresultByXML.action?reportId=${requestScope.xmlName}&resultFlag=results&jsonValue="+js+"&page="+pageNumber+"&rows="+pageSize+"&date="+new Date().getTime());
            },
                   onChangePageSize:function(pageNumber){
                   getPagerOptions("${requestScope.basePath}reportAction!getresultByXML.action?reportId=${requestScope.xmlName}&resultFlag=results&jsonValue="+js+"&page="+1+"&rows="+pageSize+"&date="+new Date().getTime());
                },
                   onSelectPage:function(pageNumber,pageSize){
                   getPagerOptions("${requestScope.basePath}reportAction!getresultByXML.action?reportId=${requestScope.xmlName}&resultFlag=results&jsonValue="+js+"&page="+pageNumber+"&rows="+pageSize+"&date="+new Date().getTime());
            }
   });
}