【element】表格后台排序，循环写法2使用@sort-change=“sort_change“

<template>
  <div>
    <el-table :data="tableData" style="width: 100%" @sort-change="sort_change">
      <el-table-column
        v-for="item in tableHeader"
        :key="item.index"
        :label="item.label"
        :prop="item.prop"
        :sortable="item.sortable"
      >
        <template slot-scope="scope">
          <span v-if="item.prop === 'name'">我是</span>
          <span v-if="item.prop === 'address'">
            {
  
   
   { scope.row[item.prop] }}
            <el-button size="mini" @click="handleEdit(scope.$index, scope.row)"
              >Edit</el-button
            >
            <el-button
              size="mini"
              type="danger"
              @click=