jqGrid问题

Question

cloMOdel从后台获取后怎么传入下面这个对象里面？？？，同时表头的长度是不确定的，所以cloModel不能写固定。
$("#grid1").xgrid({

url:{url:'../data/json-grid-standard.htm',pageSize:'10',currentPage:'1'},// 列表数据 
colModel:[{"display":"序号","width":"20","align":"center","sortable":"false","name":"xuhao"}, 
    {"display":"登陆ID","width":32,"align":"center","sortable":"true","name":"LOGIN_ID"}, 
    {"display":"姓名","width":32,"align":"center","sortable":"true","name":"XM"}, 
    {"display":"组织机构","width":32,"align":"left","sortable":"true","name":"ORG_ID"}, 
    {"display":"区域","width":32,"align":"center","sortable":"true","name":"REGION_ID"}, 
    {"display":"日期","width":32,"align":"center","sortable":"true","name":"DATE"}, 
    {"display":"是否删除","width":32,"align":"center","sortable":"true","name":"ISDEL","hide":"true"} 
   ],