function getitem(list,i){
  if(i<1 || i >list.length || list.length == 0){   //线性表位置从1 开始
    console.log("input is error")
    return
  }
  var item;
  item = list[i-1]; //数组下标从0 开始，与线性表差1
  return item;
}
var ff = getitem(list.data,0);
console.log(ff);

function insertitem(list,i,item){
  if(list.data.length == maxsize){
    console.log("the list is full");
    return
  }
  if(i<1 || i >list.data.length){
    console.log("the position is not in the range")
    return
  }
  if(i<list.data.length){
    for(var j = list.data.length -1;j>=i-1;j--){
      list.data[j+1] = list.data[j];
    }
  }
  list.data[i-1] = item; 
  list.length = list.length+1;
}
insertitem(list,2,5);
console.log(list);

function deleteitem(list,i){
  if(list.data.length == 0){
    console.log("the list is empty")
    return
  }
  if(i<1 || i >list.data.length){
    console.log("the position is not in the range")
    return
  }
  var temp = list.data[i-1];//被删除的元素
  if(i<list.data.length){
    for(var j = i ;j<list.data.length;j++){
      list.data[j-1] = list.data[j];
    }
    
  }
  list.data.splice(list.data.length-1,1);//删除最后一个
  list.length = list.length-1;
}
deleteitem(list,3);
console.log(list);

<select class="sel" ng-model="supplier.status" ng-options="item.id as item.name for item in statuss" ng-disabled="read2"></select>

<select class="col-md-1" ng-model="usertype" ng-options="item.title for item in usertypes" ng-change="usertypechange()">
<option selected value="">请选择</option>
</select>

<table class="table table-bordered table-hover no-footer">
<thead>
  <tr role="row" class="heading">
    <th colspan="2">基本信息</th>
    <th colspan="6">配送速度</th>
    <th colspan="6">服务态度</th>
  </tr>
  <tr role="row" class="heading">
      <th>配送员</th>
      <th>服务社区</th>
      <th>5星</th>
      <th>4星</th>
      <th>3星</th>
      <th>2星</th>
      <th>1星</th>
      <th>未评论</th>
      <th>5星</th>
      <th>4星</th>
      <th>3星</th>
      <th>2星</th>
      <th>1星</th>
      <th>未评论</th>
  </tr>
</thead>
<tbody ng-show="data.length>0">
  <tr role="row" ng-repeat="item in data track by $index">
      <td>{{item.id}}</td>
      <td>{{item.id}}</td>
      <td>{{item.id}}</td>
      <td>{{item.id}}</td>
      <td>{{item.id}}</td>
      <td>{{item.id}}</td>
      <td>{{item.id}}</td>
      <td>{{item.id}}</td>
      <td>{{item.id}}</td>
      <td>{{item.id}}</td>
      <td>{{item.id}}</td>
      <td>{{item.id}}</td>
      <td>{{item.id}}</td>
      <td>{{item.id}}</td>
  </tr>
</tbody>
</table>

<table class="table  table-hover table-light">
<thead>
  <tr role="row" class="heading">
    <th width="3.6%"> 订单ID </th>
    <th width="6.6%"> 社区 </th>
    <th width="6.6%"> 供应商名称 </th>
    <th width="6.6%"> 商品名称 </th>
    <th width="6.6%"> 条码 </th>
    <th width="6.6%"> 批发价 </th>
    <th width="6.6%"> 预购价 </th>
    <th width="5.6%"> 数量 </th>
    <th width="5.6%"> 收货人 </th>
    <th width="6.6%"> 联系方式 </th>
    <th width="7.6%"> 收货地址 </th>
    <th width="6.6%"> 下单时间 </th>
    <th width="6.6%"> 配送方式 </th>
    <th width="3.6%"> 状态 </th>
    <th width="14.6%"> 操作 </th>
  </tr>
</thead>
<tbody ng-if="data.length>0" ng-repeat="x in data">
  <tr role="row" class="gradeX odd" ng-repeat="y in x.orders_items">
    <td ng-if="$index == 0" rowspan={{x.orders_items.length}}> {{x.order_id}}</td>
    <td ng-if="$index == 0" rowspan={{x.orders_items.length}}> {{x.region_name}} </td>
    <td ng-if="$index == 0" rowspan={{x.orders_items.length}}> {{x.vendor_name}} </td>
    <td><span ng-bind="y.name"></span></td>
    <td><span ng-bind="y.barcode"></span></td>
    <td><span ng-bind="y.trade_price"></span></td>
    <td><span ng-bind="y.pre_selling_price"></span></td>
    <td><span ng-bind="y.count"></span></td>
    <td ng-if="$index == 0" rowspan={{x.orders_items.length}}> {{x.consignee}}</td>
    <td ng-if="$index == 0" rowspan={{x.orders_items.length}}> {{x.contacts_tel}} </td>
    <td ng-if="$index == 0" rowspan={{x.orders_items.length}}> {{x.address}} </td>
    <td ng-if="$index == 0" rowspan={{x.orders_items.length}}> {{x.order_time}}</td>
    <td ng-if="$index == 0" rowspan={{x.orders_items.length}}> {{x.transport_desc}} </td>
    <td ng-if="$index == 0" rowspan={{x.orders_items.length}}> <span class="label" ng-class="x.labelClass">{{x.export_status_desc}} </span> </td>
    <td ng-if="$index == 0" rowspan={{x.orders_items.length}}>
     <a class="btn btn-link font-purple-seance" href="/supply/order/{{x.order_id}}" target="view_window"><i class="fa fa-eye"></i> 详情</a>
   </td>
 </tr>
</tbody>
</table>

$scope.dealdata= function(val){
  if(val.length<1){
    return
  }
  var tabstring = "";
  for(var i = 0;i<val.length;i++){
    var goodslength = 0;
    for(var m = 0;m<val[i].category.length;m++){
      goodslength+=val[i].category[m].purchase.length
    }
    var str1 = "<td rowspan="+goodslength+">"+val[i].purchase_name+"</td>";
     for(var j = 0;j<val[i].category.length;j++){
        var str2 = "";
        if(j == 0){
          str2 = str1 + "<td rowspan="+val[i].category[j].purchase.length+">"+val[i].category[j].category_name+"</td>";
        }else{
          str2 = "<td rowspan="+val[i].category[j].purchase.length+">"+val[i].category[j].category_name+"</td>";
        }
        for(var k = 0;k<val[i].category[j].purchase.length;k++){
          var str3 = "";
          var item = val[i].category[j].purchase[k];
          if(k == 0){
            str3 = str2 + "<td>"+item.product_name+"</td>"+
                          "<td>"+item.product_num+"</td>"+
                          "<td>"+item.unit+"</td>"+
                          "<td>"+item.price+"</td>"+
                          "<td>"+item.total_amount+"</td>"
          }else{
            str3 = "<td>"+item.product_name+"</td>"+
                    "<td>"+item.product_num+"</td>"+
                    "<td>"+item.unit+"</td>"+
                    "<td>"+item.price+"</td>"+
                    "<td>"+item.total_amount+"</td>"
          }
          tabstring += "<tr>" + str3 + "</tr>"
        }
     }
  }
  $("#table").html(tabstring);
}