jqgrid获取不同分页的选中数据并保存回显

//创建jqGrid缓存数组
var item_selected = monids;
//jqGrid数据加载结束后设置回显状态
gridComplete: function () {  
        //*********
         var _this = this;
            if(item_selected.length>0){
                for (var i = 0; i < item_selected.length; i++) {
                    $(_this).jqGrid(‘setSelection‘,item_selected[i]);
                }
            }
            selectjqg = item_selected;
},
}
//jqGrid中触发选中功能，将数据缓存在数组中
onSelectAll:function(aRowids,status) {
            var _this = this;
            if(status){
                item_selected = _.union(item_selected, aRowids);
            }else{
                item_selected = _.difference(item_selected, aRowids);
            }
        },
beforeSelectRow:function(rowid, e) {
            var _this = this;
            var index = _.indexOf(item_selected, rowid);
            if(index==-1){
                item_selected.push(rowid);
            }
            else{
                item_selected = _.pull(item_selected, rowid);
            }
       }