element-ui el-table 表格合并后，鼠标经过的高亮显示问题

合并后高亮是这样的
目标效果
代码

<!DOCTYPE html>
<html lang="en">
 
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
  <link href="https://unpkg.com/element-ui/lib/theme-chalk/index.css" rel="stylesheet">
  <style>
    .el-table .success-row {
      background: #f5f7fa;
    }
 
    .el-table__header tr>th {
      background: #f8f8f8 !important;
    }
 
    .el-checkbox__input.is-checked .el-checkbox__inner {
      background-color: #dcdfe6;
      border-color: #dcdfe6;
    }
 
    .el-checkbox__input.is-focus .el-checkbox__inner {
      background-color: #dcdfe6;
      border-color: #dcdfe6;
    }
  </style>
</head>
 
<body>
  <div id="app">
    <div class="tables">
      <el-table ref="multipleTable" max-height="600" border :span-method="objectSpanMethod" :row-class-name="tableRowClassName"
        @cell-mouse-leave="cellMouseLeave" @cell-mouse-enter="cellMouseEnter" :data="tableData" style="width: 80%;margin:0 auto;">
        <el-table-column prop="order_number" label="订单编号" width="200px" align="center">
        </el-table-column>
        <el-table-column label="商品名称" align="center">
          <template slot-scope="scope" width="160">
            <div @click="orderdetail(scope.row.order_number,scope.row.status)">
              <div class="info">
                <div>
                  <div>{{scope.row.clothing_name}}</div>
                </div>
              </div>
            </div>
          </template>
        </el-table-column>
        <el-table-column label="买家账号" align="center">
          <template slot-scope="scope">
            <p>{{scope.row.username}}</p>
          </template>
        </el-table-column>
        <el-table-column label="下单时间" width="180px" align="center">
          <template slot-scope="scope">
            <p>{{scope.row.addtime.split(" ")[0]}}</p>
            <p>{{scope.row.addtime.split(" ")[1]}}</p>
          </template>
        </el-table-column>
        <el-table-column label="商品价格" align="center">
          <template slot-scope="scope">
            <p>￥{{scope.row.price}}</p>
          </template>
        </el-table-column>
        <el-table-column prop="amount" label="数量" align="center">
        </el-table-column>
        <el-table-column label="订单状态" align="center">
          <template slot-scope="scope">
            <div v-if="scope.row.status==0">待付款</div>
            <div v-if="scope.row.status==1">待发货</div>
            <div v-if="scope.row.status==2">已发货</div>
            <div v-if="scope.row.status==3">交易成功</div>
            <div v-if="scope.row.status==4">已取消订单</div>
            <div v-if="scope.row.status==5">交易完成</div>
            <div v-if="scope.row.status==6">交易关闭</div>
            <div v-if="scope.row.status==7">处理中</div>
            <div v-if="scope.row.status==8">退款成功</div>
            <div v-if="scope.row.status==9">交易OK</div>
            <div v-if="scope.row.status==10">已取消订单</div>
          </template>
        </el-table-column>
        <el-table-column label="总计" align="center">
          <template slot-scope="scope">
            <p>￥{{scope.row.total}}</p>
          </template>
        </el-table-column>
      </el-table>
    </div>
  </div>
</body>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script src="https://unpkg.com/element-ui/lib/index.js"></script>
<script>
  new Vue({
    el: '#app',
    data: {
      tableData: [{
          finish_time: "0",
          id: 1054,
          order_id: 688,
          order_number: "1523948882.879873",
          price: "36.00",
          amount: 2,
          clothing_id: 45,
          status: "4",
          total: "72.00",
          address_id: 119,
          user_id: 46,
          addtime: "2018-04-17 15:08:02",
          order_type: "2",
          username: 17621509577,
          clothing_name: "象汉姆童装vc小象汉姆童装vc小象汉姆童装vc",
          classify_name: "男童上装"
        },
        {
          finish_time: "0",
          id: 1038,
          order_id: 660,
          order_number: "1523859982.1010",
          price: "36.00",
          amount: 2,
          clothing_id: 45,
          status: "4",
          total: "72.00",
          address_id: 109,
          user_id: 46,
          addtime: "2018-04-16 14:26:22",
          order_type: "2",
          username: 17621509577,
          clothing_name: "象汉姆童装vc小象汉姆童装vc小象汉姆童装vc",
          classify_name: "男童上装"
        },
        {
          finish_time: "0",
          id: 1030,
          order_id: 635,
          order_number: "1523603188.1010",
          price: "36.00",
          amount: 20,
          clothing_id: 45,
          status: "2",
          total: "792.00",
          address_id: 140,
          user_id: 33,
          addtime: "2018-04-13 15:06:29",
          order_type: "2",
          username: 17737536671,
          clothing_name: "象汉姆童装vc小象汉姆童装vc小象汉姆童装vc",
          classify_name: "男童上装"
        },
        {
          finish_time: "2018-04-13 15:07:42",
          id: 1029,
          order_id: 635,
          order_number: "1523603188.1010",
          price: "36.00",
          amount: 2,
          clothing_id: 45,
          status: "7",
          total: "792.00",
          address_id: 140,
          user_id: 33,
          addtime: "2018-04-13 15:06:29",
          order_type: "2",
          username: 17737536671,
          clothing_name: "象汉姆童装vc小象汉姆童装vc小象汉姆童装vc",
          classify_name: "男童上装"
        },
        {
          finish_time: "0",
          id: 1005,
          order_id: 606,
          order_number: "1523524708.1010",
          price: "36.00",
          amount: 2,
          clothing_id: 45,
          status: "4",
          total: "72.00",
          address_id: 109,
          user_id: 46,
          addtime: "2018-04-12 17:18:29",
          order_type: "2",
          username: 17621509577,
          clothing_name: "象汉姆童装vc小象汉姆童装vc小象汉姆童装vc",
          classify_name: "男童上装"
        },
        {
          finish_time: "0",
          id: 1001,
          order_id: 602,
          order_number: "1523519854.659426",
          price: "36.00",
          amount: 2,
          clothing_id: 45,
          status: "4",
          total: "72.00",
          address_id: 109,
          user_id: 46,
          addtime: "2018-04-12 15:57:34",
          order_type: "2",
          username: 17621509577,
          clothing_name: "象汉姆童装vc小象汉姆童装vc小象汉姆童装vc",
          classify_name: "男童上装"
        },
        {
          finish_time: "0",
          id: 988,
          order_id: 545,
          order_number: "1523326439.745645",
          price: "36.00",
          amount: 1,
          clothing_id: 45,
          status: "4",
          total: "36.00",
          address_id: 140,
          user_id: 33,
          addtime: "2018-04-10 10:13:59",
          order_type: "2",
          username: 17737536671,
          clothing_name: "象汉姆童装vc小象汉姆童装vc小象汉姆童装vc",
          classify_name: "男童上装"
        },
        {
          finish_time: "0",
          id: 986,
          order_id: 543,
          order_number: "1523286363.197641",
          price: "36.00",
          amount: 3,
          clothing_id: 45,
          status: "4",
          total: "108.00",
          address_id: 109,
          user_id: 46,
          addtime: "2018-04-09 23:06:03",
          order_type: "2",
          username: 17621509577,
          clothing_name: "象汉姆童装vc小象汉姆童装vc小象汉姆童装vc",
          classify_name: "男童上装"
        },
        {
          finish_time: "2018-04-17 11:01:42",
          id: 970,
          order_id: 530,
          order_number: "1523245914.1010",
          price: "36.00",
          amount: 1,
          clothing_id: 45,
          status: "5",
          total: "108.00",
          address_id: 140,
          user_id: 33,
          addtime: "2018-04-09 11:51:54",
          order_type: "2",
          username: 17737536671,
          clothing_name: "象汉姆童装vc小象汉姆童装vc小象汉姆童装vc",
          classify_name: "男童上装"
        },
        {
          finish_time: "2018-04-17 11:07:07",
          id: 969,
          order_id: 530,
          order_number: "1523245914.1010",
          price: "36.00",
          amount: 2,
          clothing_id: 45,
          status: "5",
          total: "108.00",
          address_id: 140,
          user_id: 33,
          addtime: "2018-04-09 11:51:54",
          order_type: "2",
          username: 17737536671,
          clothing_name: "象汉姆童装vc小象汉姆童装vc小象汉姆童装vc",
          classify_name: "男童上装"
        },
        {
          finish_time: "0",
          id: 907,
          order_id: 428,
          order_number: "1522755736.123802",
          price: "36.00",
          amount: 1,
          clothing_id: 45,
          status: "10",
          total: "36.00",
          address_id: 140,
          user_id: 33,
          addtime: "2018-04-03 19:42:16",
          order_type: "2",
          username: 17737536671,
          clothing_name: "象汉姆童装vc小象汉姆童装vc小象汉姆童装vc",
          classify_name: "男童上装"
        },
        {
          finish_time: "0",
          id: 884,
          order_id: 405,
          order_number: "1522749320.739114",
          price: "36.00",
          amount: 1,
          clothing_id: 45,
          status: "10",
          total: "36.00",
          address_id: 140,
          user_id: 33,
          addtime: "2018-04-03 17:55:20",
          order_type: "2",
          username: 17737536671,
          clothing_name: "象汉姆童装vc小象汉姆童装vc小象汉姆童装vc",
          classify_name: "男童上装"
        },
        {
          finish_time: "0",
          id: 823,
          order_id: 366,
          order_number: "1522659064.1010",
          price: "36.00",
          amount: 2,
          clothing_id: 45,
          status: "4",
          total: "2104.00",
          address_id: 137,
          user_id: 63,
          addtime: "2018-04-02 16:51:04",
          order_type: "2",
          username: 17737536677,
          clothing_name: "象汉姆童装vc小象汉姆童装vc小象汉姆童装vc",
          classify_name: "男童上装"
        },
        {
          finish_time: "0",
          id: 820,
          order_id: 365,
          order_number: "1522658505.1010",
          price: "36.00",
          amount: 3,
          clothing_id: 45,
          status: "4",
          total: "2260.00",
          address_id: 137,
          user_id: 63,
          addtime: "2018-04-02 16:41:45",
          order_type: "2",
          username: 17737536677,
          clothing_name: "象汉姆童装vc小象汉姆童装vc小象汉姆童装vc",
          classify_name: "男童上装"
        }
      ],
      rowIndex: '-1',
      OrderIndexArr: [],
      hoverOrderArr: []
    },
    mounted: function () {
      this.getOrderNumber()
    },
    methods: {
      // 获取相同编号的数组
      getOrderNumber: function () {
        var OrderObj = {}
        this.tableData.forEach(function (element, index) {
          element.rowIndex = index
          if (OrderObj[element.order_number]) {
            OrderObj[element.order_number].push(index)
          } else {
            OrderObj[element.order_number] = []
            OrderObj[element.order_number].push(index)
          }
        }, this);
 
        for (var k in OrderObj) {
          if (OrderObj[k].length > 1) {
            this.OrderIndexArr.push(OrderObj[k])
          }
        }
      },
 
      // 合并单元格
      objectSpanMethod: function ({row,column,rowIndex,columnIndex}) {
        if (columnIndex === 0 || columnIndex === 3 || columnIndex === 4 || columnIndex === 7 || columnIndex ===8 || columnIndex === 9) {
          for (var i = 0; i < this.OrderIndexArr.length; i++) {
            var element = this.OrderIndexArr[i]
            for (var j = 0; j < element.length; j++) {
              var item = element[j]
              if (rowIndex == item) {
                if (j == 0) {
                  return {
                    rowspan: element.length,
                    colspan: 1
                  }
                } else if (j != 0) {
                  return {
                    rowspan: 0,
                    colspan: 0
                  }
                }
              }
            }
          }
        }
      },
 
      tableRowClassName: function ({row,rowIndex}) {
        var arr = this.hoverOrderArr
        for (var i = 0; i < arr.length; i++) {
          if (rowIndex == arr[i]) {
            return 'success-row'
          }
        }
      },
 
      cellMouseEnter: function (row, column, cell, event) {
        this.rowIndex = row.rowIndex
        this.hoverOrderArr = []
        this.OrderIndexArr.forEach(function (element) {
          if (element.indexOf(this.rowIndex) >= 0) {
            this.hoverOrderArr = element
          }
        }, this);
      },
      
      cellMouseLeave: function (row, column, cell, event) {
        this.rowIndex = '-1'
      }
    }
  })
</script>
 
</html>
复制代码