vue element-ui 中scope的小白問題

示例沒懂 ,scope是默認(rèn)拿的的綁定list嗎
row 怎么就能自動(dòng)獲取當(dāng)前行了嗎？
不懂其中的原理

<template>
  <el-table
    :data="tableData4"
    style="width: 100%"
    max-height="250">
    <el-table-column
      fixed
      prop="date"
      label="日期"
      width="150">
    </el-table-column>
    <el-table-column
      prop="name"
      label="姓名"
      width="120">
    </el-table-column>
    <el-table-column
      prop="province"
      label="省份"
      width="120">
    </el-table-column>
    <el-table-column
      prop="city"
      label="市區(qū)"
      width="120">
    </el-table-column>
    <el-table-column
      prop="address"
      label="地址"
      width="300">
    </el-table-column>
    <el-table-column
      prop="zip"
      label="郵編"
      width="120">
    </el-table-column>
    <el-table-column
      fixed="right"
      label="操作"
      width="120">
      <template slot-scope="scope">
        <el-button
          @click.native.prevent="deleteRow(scope.$index, tableData4)"
          type="text"
          size="small">
          移除
        </el-button>
      </template>
    </el-table-column>
  </el-table>
</template>

<script>
  export default {
    methods: {
      deleteRow(index, rows) {
        rows.splice(index, 1);
      }
    },
    data() {
      return {
        tableData4: [{
          date: '2016-05-03',
          name: '王小虎',
          province: '上海',
          city: '普陀區(qū)',
          address: '上海市普陀區(qū)金沙江路 1518 弄',
          zip: 200333
        }, {
          date: '2016-05-02',
          name: '王小虎',
          province: '上海',
          city: '普陀區(qū)',
          address: '上海市普陀區(qū)金沙江路 1518 弄',
          zip: 200333
        }, {
          date: '2016-05-04',
          name: '王小虎',
          province: '上海',
          city: '普陀區(qū)',
          address: '上海市普陀區(qū)金沙江路 1518 弄',
          zip: 200333
        }, {
          date: '2016-05-01',
          name: '王小虎',
          province: '上海',
          city: '普陀區(qū)',
          address: '上海市普陀區(qū)金沙江路 1518 弄',
          zip: 200333
        }, {
          date: '2016-05-08',
          name: '王小虎',
          province: '上海',
          city: '普陀區(qū)',
          address: '上海市普陀區(qū)金沙江路 1518 弄',
          zip: 200333
        }, {
          date: '2016-05-06',
          name: '王小虎',
          province: '上海',
          city: '普陀區(qū)',
          address: '上海市普陀區(qū)金沙江路 1518 弄',
          zip: 200333
        }, {
          date: '2016-05-07',
          name: '王小虎',
          province: '上海',
          city: '普陀區(qū)',
          address: '上海市普陀區(qū)金沙江路 1518 弄',
          zip: 200333
        }]
      }
    }
  }
</script>

求解這段代碼的傳遞

<div class="div-tab">
            <el-table :data="bankLists" >
                <el-table-column prop="index" label="index" type="index" :index="indexMethod">
                </el-table-column>
                <el-table-column prop="id" label="編號">
                </el-table-column>
                <el-table-column prop="interfaceNo" label="交易號">
                </el-table-column>
                <el-table-column prop="remarks" label="備注">
                </el-table-column>
                <el-table-column prop="writer" label="作者">
                </el-table-column>
                <el-table-column prop="createDate" label="創(chuàng)建時(shí)間">
                </el-table-column>
                <el-table-column prop="modifyDate" label="修改時(shí)間">
                </el-table-column>
                <el-table-column prop="send" label="發(fā)送報(bào)文">
                </el-table-column>
                <el-table-column prop="receive" label="接受報(bào)文">
                </el-table-column>
                <el-table-column label="操作" width="100px">
                      <template scope="scope">
                        <el-button size="small" type="primary"  icon="el-icon-edit" @click="bank_mapping_edit(scope.row)"></el-button>
                        <el-button size="small" type="danger"  icon="el-icon-delete" @click="bank_mapping_del(scope.row)"></el-button>
                      </template>
                </el-table-column>

            </el-table>
        </div>