1、js删除函数：可以成功删除

deletePerson: function (e) {
    var arr = this.data.PersonArray;
    var index = e.currentTarget.dataset.index;
    arr.splice(index, 1)
    this.setData({
      PersonArray: arr,
    });
    console.log("删除一个员工后，所有员工信息:", this.data.PersonArray)// 打印显示，成功删除了index下标的数据
  },

2、但是页面无法刷新

<!-- 员工管理 -->
      <view class="item">
        <view class="title">
          <view>员工管理 :</view>
        </view>
        <view wx:for="{{PersonArray}}" wx:for-item="person" wx:for-index="index" wx:key="this">
          <view class="health-card">
            <!-- 删除一个员工 -->
            <view class="delete_person">
              <view class="delete_person num">序号 {{index+1}}</view>
              <view class="delete_person txt" hover-class='highSelectColor' data-index="{{index}}" bindtap="deletePerson">
                <image class="delete_person icon" src="../../resource/删除.png"> </image>
                <text>删除</text>
              </view>
            </view>
            <!-- 员工姓名 -->
            <view class="person">
              <text class="title">员工姓名：</text>
              <input class="con" maxlength="15" data-index="{{index}}" bindinput="getPersonName" placeholder="请输入..." />
            </view>
            <!-- 岗位名称 -->
            <view class="person">
              <text class="title">岗位名称：</text>
              <input type="text" class="con" data-index="{{index}}" bindinput="getPersonPost" placeholder="请输入..." />
            </view>
            <!-- 联系电话 -->
            <view class="person">
              <text class="title">联系电话：</text>
              <input type="number" class="con" data-index="{{index}}" bindinput="getPersonPhone" placeholder="请输入..." />
            </view>
          
          </view>
        </view>
        <!-- 添加一个员工 -->
        <view class="add" hover-class='highSelectColor' bindtap="addOnePerson">
          <image class="add-person" src="../../resource/添加.png"></image>
          <text>添加员工</text>
        </view>
      </view>