我在具有18条记录的数组数据的jqgrid中遇到分页问题，​​但是即使我指定了pagination：true，pager：jQuery（’＃pager1’），记录也不会显示在页面中。您能帮我实现分页而不是滚动吗？

<script type="text/javascript">
 jQuery("#list4").jqGrid({
 datatype: "clientSide",
 height: 200,
    colNames:['Inv No','Date', 'Client', 'Amount','Tax','Total','Notes'],
    colModel:[
    {name:'id',index:'id', width:60, sorttype:"int"},
    {name:'invdate',index:'invdate', width:90, sorttype:"date"},
    {name:'name',index:'name', width:100},
    {name:'amount',index:'amount', width:80, align:"right",sorttype:"float"},
    {name:'tax',index:'tax', width:80, align:"right",sorttype:"float"},
    {name:'total',index:'total', width:80,align:"right",sorttype:"float"},
    {name:'note',index:'note', width:150, sortable:false}
    ],
    multiselect: true,
 pagination:true,
  pager:jQuery('#pager1'), 
 rowNum: 10,
 rowList: [5, 10, 20, 50],
 sortname: 'id',   
 sortorder: 'asc',
 viewrecords: true,
 page: 1,
 loadonce: true,  
 totalpages: 2,   
 totalrecords:18,     
 showpage:true,   
 imgpath: "/themes/default/images",         
 caption: "Manipulating Array Data"
 });
 var mydata = [
 {id:"1",invdate:"2007-10-01",name:"test",note:"note",amount:"200.00",tax:"10.00",total:"210.00"},
 {id:"2",invdate:"2007-10-02",name:"test2",note:"note2",amount:"300.00",tax:"20.00",total:"320.00"},
 {id:"3",invdate:"2007-09-01",name:"test3",note:"note3",amount:"400.00",tax:"30.00",total:"430.00"},
 {id:"4",invdate:"2007-10-04",name:"test",note:"note",amount:"200.00",tax:"10.00",total:"210.00"},
 {id:"5",invdate:"2007-10-05",name:"test2",note:"note2",amount:"300.00",tax:"20.00",total:"320.00"},
 {id:"6",invdate:"2007-09-06",name:"test3",note:"note3",amount:"400.00",tax:"30.00",total:"430.00"},
 {id:"7",invdate:"2007-10-04",name:"test",note:"note",amount:"200.00",tax:"10.00",total:"210.00"},
 {id:"8",invdate:"2007-10-03",name:"test2",note:"note2",amount:"300.00",tax:"20.00",total:"320.00"},
 {id:"9",invdate:"2007-09-01",name:"test3",note:"note3",amount:"400.00",tax:"30.00",total:"430.00"},
 {id:"10",invdate:"2007-10-01",name:"test",note:"note",amount:"200.00",tax:"10.00",total:"210.00"},
 {id:"11",invdate:"2007-10-02",name:"test2",note:"note2",amount:"300.00",tax:"20.00",total:"320.00"},
 {id:"12",invdate:"2007-09-01",name:"test3",note:"note3",amount:"400.00",tax:"30.00",total:"430.00"},
 {id:"13",invdate:"2007-10-04",name:"test",note:"note",amount:"200.00",tax:"10.00",total:"210.00"},
 {id:"14",invdate:"2007-10-05",name:"test2",note:"note2",amount:"300.00",tax:"20.00",total:"320.00"},
 {id:"15",invdate:"2007-09-06",name:"test3",note:"note3",amount:"400.00",tax:"30.00",total:"430.00"},
 {id:"16",invdate:"2007-10-04",name:"test",note:"note",amount:"200.00",tax:"10.00",total:"210.00"},
 {id:"17",invdate:"2007-10-03",name:"test2",note:"note2",amount:"300.00",tax:"20.00",total:"320.00"},
 {id:"18",invdate:"2007-09-01",name:"test3",note:"note3",amount:"400.00",tax:"30.00",total:"430.00"},

 ];
 for(var i=0;i<=mydata.length;i++)   
 jQuery("#list4").addRowData(i+1,mydata[i]);